17. What do we learn about the twin Jims?
答案:(B) They grew up in different surroundings.
【点评】:细节题。关键词即是Jim 这个名字。关于两个Jim的情况是:他们一直生长在不同家庭,直到39岁才见面。 grew up in different families and did not meet for 39 years. 他们都结过两次婚,第二次婚姻中,妻子都叫贝蒂。Both men were married twice and their second wives were both named Betty. 而他们的第一个孩子都是儿子 Both twins named their first sons James Allen.
18. Why are scientists interested in studying identical twins raised in different families?
答案:(A) They want to find out the relationship between environment and biology.
【点评】:细节题。通过对两个Jim的研究, These twins help scientists understand the connection between environment and biology。
2014年12月四级听力答案及点评:短文第二篇
19. What does the speaker say about camping?
答案:(D) It is an inexpensive way of spending a holiday.
【点评】:细节题。文章开头就说到Camping is still one of the cheapest ways of having a holiday. 这里的the cheapest way of having a holiday正好就和选项中的inexpensive way of spending a holiday同义互换
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