第一节：完形填空(共10小题；每小题2分，满分20分)
阅读下面短文，掌握其大意，然后从2l-30各题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。
It’s an age-old saying: Men are from Mars; women are from Venus. Males and females __21_ different behaviors almost from birth. Researchers say these behaviors are due to basic differences in __22_ structure and activity. Studies show men are better at hitting targets and __23__ math problems while women are better at memorizing words and_24__faces. Why the differences?
A test of the brain’s electrical activity shows that women commonly use both sides of their brain while men rely more on one. Scientists already know that the two sides of the brain control different functions---one controlling the sense of space, __25__, the other controlling language. Some researchers believe that the different ways men and women use their brains _26__from ancient times, when cave men hunted and women cared for the children. Men had to have good aim. Women had to talk to the kids.
Whatever the __27__, the battle of the sexes continues. And although their brains are constructed __28__ differently, men and women may be equally capable. They may simply __29__different abilities. Take a couple arguing over the location of their car in a parking lot. The man might use his sense of space to find it, while the woman relies on her __30__ of landmarks. Both of them find the car. But chances are, they’ll still argue about who’s the better driver and who’s better at finding the way home.
21. A .build B. form C. choose D. show
22. A. brain B. muscle C. heart D. head
23. A. testing B. finding C. making D. solving
24. A. realizing B. recognizing C. describing D. painting
25. A. at least B. as a result C. above all D. for example
26. A. grew B. developed C. invented D. produced
27. A. consideration B. decision C. imagination D. explanation
28. A. slightly B. heavily C. greatly D. quite
29. A. show off B. take on C. depend on D. keep up
30. A. drawing B. memory C. thinking D. setting