3.21托福考试听力真题及参考答案分享，考生关注！

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　　Task 1

　　内容回忆Do you agree or disagree with the following statement? Instead of requiring (elementary school) students to do experiments themselves, schools should only allow them to watch experiments demonstrated by their teachers.

　　参考答案In my opinion, elementary school students should only be allowed to watch experiments demonstrated by the teachers. This is because elementary school students are mostly at the age of 7 to 12. They are too young to handle those various and complicated experimental tools. Also, it can be really dangerous for such young students to do experiments. They are likely to break some tools or instruments, and may even get hurt by the glass or chemicals. Therefore, I think they should only watch instead of doing themselves.

　　Task 2

　　阅读学校要请一个专业的导演开指导音乐会，说会更专业而且因为导演知名度高所以能吸引更多人来看。

　　听力学生说导演太忙，可能最后还是自己练习，而且不会吸引很多人，因为普通学生不知道这个导演即使他在业内知名

　　Task 3

　　阅读business incentive

　　听力举例子说明，公司给每个销售人员提成，注册一个用户提成一笔钱，但是销售会以更低的价格给下家，然后他们注册。这会让员工行为致使公司利益受损，制度不完善

　　Task 4

　　话题水鸟为了增加游泳捕食技能的两个方式致使进化不同

　　听力一个是增加翅膀长度，俯冲更有利，但是飞行能力降低；

　　另一个是把腿往后长，这样游泳的时候就可以做助推器，但是走路就受影响。例子用的oak和gtete