单词：
单词： 相关文章
[00:02.99]3 Listen and order. [00:07.30]You will hear Miss Wang give instructions on [00:10.67]how to use a Bunsen burner. [00:14.04]Listen to the instructions [00:15.94]and number the pictures in the correct order. [00:20.12]Number the steps 1-8. [0
外研社新标准初中英语九年级
In an Aesop fable, a thirsty crow wanting to drink from a pitcher must first raise the water level. So he drops pebbles in the container. In real life, the European Jay can perform the same task. But just how smart is it? Researchers challenged jays
Scientific American(八)月
Wk 30 (25 July 1978) World's First Test Tube-Baby Is BornThis Week in HistoryLouise Brown, the world's first test tube baby, is born in Manchester, England. In 1978, the world's first test tube baby, Louise Brown, was born in Oldham and District Gene
英语新闻与报道—News and Reports
[00:00.00]1.M:I'm going to be up all right studying for my exam. [00:05.56]W:Do you really think that's wise? [00:07.84]Q:What does the woman imply? [00:10.06]2.W:Can you tell me what time Flight 218 arrives? [00:15.28]M:Yes,it was scheduled to arriv
英语六级听力练习集锦
讲解文本： rack one's brain 绞尽脑汁，努力思索 Write them down and then you won't have to rack your brain anymore! 把这些都写下来，你就不用每次都拼命想了。 The test is too hard. I have been racking my brain for days.
愉悦口语
美国习惯用语第858:努力想要记起某事(音频) rack one's brain 我最近发现自己还没上年纪，就已经开始健忘了。昨天，一个接受采访的专家向我推荐了一家很有介绍价值的机构。今天本想搜集点资
美国习惯用语