What is the main idea of the last paragraph？
A. It is difficult to see fingerprints with human eyes.
B. There are special ways to recover a suspect's fingerprints.
C. Even a small part of a fingerprint is useful for identification.
D. Suspects usually try to avoid leaving their fingerprints at the scene.
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What is the main idea of the passage？
A. Sound development of children.
B. Equality between men and women.
Co-operation between husband and wife.
D. Husband and wife share in tasks and in decision-making.
A．Women are more helpful by nature.B．Women have a higher sense of achievement.C．The co
A. Women are more helpful by nature.
B. Women have a higher sense of achievement.
C. The conversational style. of men and women is different.
D. Women's conversational styles change more as they mature.
In the Middle Ages people believed it was the earth, not the sun, ______ the center of our
A. was that
B. that was
C. was
D. that
What do real policemen do at work？
A. They often deal with robbers and thieves.
B. They talk with a lot of victims and visitors.
C. They don't deal with serious crimes very often.
D. They usually stay in their office studying cases.
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