温度单位

Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi

发表于:2018-12-01 / 阅读(200) / 评论(0) 分类 新东方背诵文选

Review of Units1-6 [00:03.81]2a Listen and number the pictures[1-4]. [01:11.89]2b Read the sentences below. [01:17.45]Then listen again and circle T(for true)of F(for false). [01:25.71]The boy is Nick Smith. T F [01:42.35]Nick doesn't like his class.

发表于:2018-12-13 / 阅读(196) / 评论(0) 分类 新目标初中英语七年级

Review of units 1-6 [00:04.70]3a Listen to the four conversations. [00:10.87]Match the conversations with the correct pictures. [02:18.03]3b Listen again and follow the instructions next to the pictures. [04:26.79]Review of units 1-6 to expressions [

发表于:2018-12-13 / 阅读(136) / 评论(0) 分类 新目标初中英语八年级上

Review of units 7-12 [00:03.89]3a Listen to the four conversations. [00:09.85]match the conversations with the correct pictures. [02:37.31]Listen again and follow the instructions next to the pictures. [05:05.06]Review of units 7-12 [05:14.02]topping

发表于:2018-12-13 / 阅读(158) / 评论(0) 分类 新目标初中英语八年级上

Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of

发表于:2019-01-11 / 阅读(74) / 评论(0) 分类 英语杂谈

Review of units 11-15 [00:04.78]2a Listen to the four conversations. [00:10.66]Match the conversations with the correct pictures. [04:08.56]2b Listen again and follow the instructions above next to the pictures. [08:11.05]Review of units 11-15 [08:19

发表于:2019-01-16 / 阅读(209) / 评论(0) 分类 新目标初中英语九年级(全一册)