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Task3
阅读
标题:Build a campus garden
变化:A student wrote a letter to campus newspaper suggesting to make a campus garden for 2 reasons. (A) Students can relax with flowers and trees (B) there is an empty land behind the scientist buildings which is suitable for being a garden
听力
态度:The guy disagrees
原因 1:It's cold for most of time here. Only blooming time for plants is summer break. During rest of time when campus is full,the flowers can't grow, the campus garden is meaningless.
原因 2:The empty land is gonna be used to expand the scientist buildings
Task4
阅读 标题:Convergent evolution,趋同进化。
定义:生活在不同地方的生物会因为相似的环境进化出相似的特点。
听力
例子:Lecture 中讲了两种食蚁兽生物,一种住在非洲,一种住在澳大利亚,它们吃同一种昆虫,这种昆虫生活的地方很隐秘。而尽管这两种昆虫生活在完全不同的地方,它们都进化出了 large, sticky tongues 以帮助它们获取这种昆虫作为食物。
Task5
听力
问题:the girl has a time confliction between her tutoring program and her history class this semester
解决方案 1:change her history class to next semester
优点 1:can continue her tutoring program
缺点 1:next semester the history class will change from ancient to modern, which she’s not interested in
解决方案 2:ask her classmates from math class to help her out
优点 2:she can take history classes this semester
缺点 2:she cannot keep tutoring kids math anymore
Task6
听力
话题:把一些物种从一个地方移到另一个地方可能会对当地的物种产生一些不好的结果。
要点 1:树长的太高大会挡住其他树木接收阳光
例子 1:有一种名为 A 的树长得很高大,但是却挡住了阳光,这样影响了比它矮小的植物进行光合作用,对生长不利。
要点 2:有些树木会繁殖过快,导致物种入侵。
例子 2:有一种名为 B 的树,能够在很短的时间内繁殖,因此成为了外来入侵者,占领了很多本土植物的土地,影响其生存。
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