and Washington, D.C., where their insurance costs are 16% lower.

　　"More than 11,9000 male drivers died in U.S. traffic accident in 2009, compared with just under 4,900 women drivers," according to the study. "Based on miles traveled, men died at a rate of 2.5 deaths per 100 million miles traveled, vs. 1.7 deaths for women."

24. According to the study, male drivers __________.

A. are less aggressive while driving

B. are more skilled at auto knowledge

C. are more likely to stick to driving laws

D. are less familiar with safety equipment

25. Insurance companies focus on female driver clients(客户) probably because they __________.

A. cause more accidents on the road but ask for little

B. cause little damage and pay more money to the insurance companies

C. are more careful drivers and cause less damage

D. make up the most part of the insurance clients

26. We can infer from the passage that __________.

A. men are 3.1 times more likely to get tickets than women

B. all women in the USA pay the same for their auto insurance

C. more female drivers die every year than male drivers

D. women are generally safer drivers than the opposite sex

27. The writer mainly develops paragraphs by __________.

A. giving examples B. making comparisons

C. drawing a conclusion D. presenting an argument

　　Modern day robots may not be as entertaining as R2D2 or the robot from Lost in Space, but robots are very important to space exploration and are being used in a variety of different ways for several important reasons.

Robots make great explorers on planets, moons, and other landing areas. Aside from the earth, just about every surface in the solar system is unsafe for humans to explore. The air on most other planets is insufficient fortunate for humans to explore. The air on most other planets is insufficient