For some social animals like jackdaws, mobbing is important because______.
A. the young birds can learn about the enemy"s appearance
B. these kinds of birds are born to know their enemy
C. the young birds can escape to safe places by mobbing
D. the young birds can learn to fight with their enemy
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A．Study a weather map.B．Visit a weather station.C．Listen to a weather re
A. Study a weather map.
B. Visit a weather station.
C. Listen to a weather report.
D. Go to a storm shelter.
A．The woman is a better mechanic than he isB．He can"t go for a ride with the woma
A. The woman is a better mechanic than he is
B. He can"t go for a ride with the woman
C. He doesn"t know a lot about newer cars
D. The woman shouldn"t buy a used car
What is the talk mainly about？
A comparison of different stages in art history.
B. A formula for calculating art value.
C. A process for improving art evaluation.
D. A look into the relationship between life and art.
According to the professor, which is true about the role of biology in peoples life？
A. Biology is too difficult for ordinary people to understand.
Biology is less important compared with medical science.
C. Biology, like other sciences, is only important to scientists.
D. Biology is one of the most important sciences related to people"s everyday life.
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