60. The aim of the research is to _______.
    A. find a new gene called period3
    B. find out how genes affect a person’s need for sleep
    C. test how long you can stay awake
    D. measure how good your memory is

第二节 根据对话内容，从对话后的选项中选出能填入空白出的最佳选项。选项中有两项为多余选项。
-Where shall we take our children this weekend?
-We could take them to Water World or to Old –field Adventure Park. __61__.
-Well, how far away are they? I don’t want to spend all day in the car.
-__62__. But Old –field Adventure Park will take about two and a half hours if we’re lucky.
-__63__.
-Water World has a huge fun swimming pool. __64__.
-I really don’t like zoos. I hate seeing animals in cages.
-Well, there aren’t any animals at Water World.
-If we are going there, I’m going to take a picnic basket. I know they have got restaurants but they always expensive. __65__.
 -That’s a good idea. I’ll tell the children.
 -Ok.