Lecttr: Đọc và nâng tầm tri thức

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Margaret Fuller nói “Hôm nay là người đọc, ngày mai là lãnh đạo”. Lecttr mang đến cho bạn trải nghiệm đọc hơn 400 bài viết được hay nhất, gần gũi nhất về kiến thức phổ thông, chia sẻ kinh nghiệm, kĩ năng và hơn thế nữa!

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Nổi bật trên Lecttr

Chương 9. Anđehit - Xeton - Axit cacboxylic

Bài 44: Andehit – Xeton

<img alt='' height='60' width='60' data-src='https://zdz224j0waobj.vcdn.cloud/wp-content/uploads/front-user-profile/1579087244_received_1550957828371951.jpeg' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://zdz224j0waobj.vcdn.cloud/wp-content/uploads/front-user-profile/1579087244_received_1550957828371951.jpeg' class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by Callie Tháng Mười 3, 2021

Chuyên đề Axit nitric và muối nitrat

<img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by anhaodang Tháng Chín 30, 2021

Chương 9. Anđehit - Xeton - Axit cacboxylic

Chuyên đề Anđehit – Xeton

<img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by anhaodang Tháng Chín 30, 2021

Lớp 10

Unit 15: Cities

Written by ngaluong Tháng Chín 29, 2021

Chương 2: Sinh trưởng và sinh sản của vi sinh vật

Sinh trưởng Vi sinh vật

<img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by thieungocvy Tháng Ba 13, 2021

Câu điều kiện (Conditional Sentences) kèm bài tập có lời giải

<img alt='' src='https://secure.gravatar.com/avatar/70f1b976d3d44e7ce95cdb1a85deb18c?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/70f1b976d3d44e7ce95cdb1a85deb18c?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by ngoclinhbui Tháng Ba 7, 2021

Virus

<img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by thieungocvy Tháng Ba 5, 2021

Tóm tắt kiến thức trọng tâm Sinh học tế bào

<img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by thieungocvy Tháng Ba 5, 2021

Lớp 11

Chương 9. Anđehit - Xeton - Axit cacboxylic

Bài 44: Andehit – Xeton

<img alt='' height='60' width='60' data-src='https://zdz224j0waobj.vcdn.cloud/wp-content/uploads/front-user-profile/1579087244_received_1550957828371951.jpeg' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://zdz224j0waobj.vcdn.cloud/wp-content/uploads/front-user-profile/1579087244_received_1550957828371951.jpeg' class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by Callie Tháng Mười 3, 2021

Chuyên đề Axit nitric và muối nitrat

<img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by anhaodang Tháng Chín 30, 2021

Chương 9. Anđehit - Xeton - Axit cacboxylic

Chuyên đề Anđehit – Xeton

<img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by anhaodang Tháng Chín 30, 2021

Chuyên đề Phenol

<img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/abe1bbcf7308cf6fd98118ac0478cf0e?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by anhaodang Tháng Chín 30, 2021

Cách để phân biệt Some và Any (kèm bài tập vận dụng)

<img alt='' src='https://secure.gravatar.com/avatar/70f1b976d3d44e7ce95cdb1a85deb18c?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/70f1b976d3d44e7ce95cdb1a85deb18c?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by ngoclinhbui Tháng Ba 7, 2021

Lớp 12

Trao đổi vật chất và năng lượng trong hệ sinh thái

<img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/bf0e39e109f46ca4dd80d49a070e4983?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by thieungocvy Tháng Ba 12, 2021

Chương 7. Sắt và một số kim loại quan trọng

Bài 31: Sắt

<img alt='' height='60' width='60' data-src='https://zdz224j0waobj.vcdn.cloud/wp-content/uploads/front-user-profile/1579087244_received_1550957828371951.jpeg' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://zdz224j0waobj.vcdn.cloud/wp-content/uploads/front-user-profile/1579087244_received_1550957828371951.jpeg' class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by Callie Tháng Ba 12, 2021

Chương 6: Kim loại kiềm/Kim loại kiềm thổ/Nhôm

Bài 27: Nhôm và hợp chất của nhôm

<img alt='' src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by nnquin Tháng Ba 12, 2021

Bài 26: Kim loại kiềm thổ và hợp chất quan trọng của kim loại kiềm thổ

<img alt='' src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by nnquin Tháng Ba 12, 2021

Chuyên đề: Tán sắc ánh sáng

Written by Nguyentrantunhan Tháng Ba 10, 2021