7.Some other cases,though less dramatic,are equally _______ of attention.

  A. preserving                           B. conserving

  C. deserving                           D. serving

8._______ how to minimize the worst effects of Jet Lag,and your flight will be less stressful.

  A. If you understand                            B. Understand

  C. To understand                       D. By understanding

9.It _______ 36 monkeys to test a sample of polio vaccine,now it takes only 22.

  A. used to taking                         B. used to take

  C. is used to take                         D. was used to taking

10.His tastes and habits _______ surprisingly with those of his wife.

  A. coincide                            B. like

  C. similar                              D. alike

Ⅱ .Mistake Recognition(10 points,1 point for each)

       下面的句子中每个句子都有四处划有横线并标以 A 、 B 、 C 、 D ，其中有一处是错误的。指出你认为错误之处，并把答案写在答题纸相应的位置上。

11.  diamonds  grease,they are by the rocks and mud flow down the tables.

12.    chance,   ?

13.Serious injury or death not a subject to discuss;we would rather about football or weather or .