题目内容

4.

A. They were making a lot of noise.
B. They were looking after the queen.
C. They were dancing in a unique way.
D. They were looking for a new box to live in.

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Questions 5 to 7 are based on the conversation you have just heard.5.

A. The latest test on a rare animal species.
B. The finding of two new species of frog.
C. The second trip to a small remote island.
D. The discovery of a new species of snake.

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6.

A. He fell from a tall palm tree by accident.
B. A snake crawled onto his head in his sleep.
C. He discovered a rare fog on a deserted island.
D. A poisonous snake attacked him on his field trip.

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7.

A. From its origin.
B. From its length.
C. From its colour.
D. From its genes.

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4-3-人类肿瘤的85～90%是由环境因素引起的，其中哪种因素所占比例最大？

A. 生物因素
B. 化学因素
C. 物理因素

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4.

A. They were making a lot of noise. B. They were looking after the queen. C. They were dancing in a unique way. D. They were looking for a new box to live in.

Questions 5 to 7 are based on the conversation you have just heard.5.

6.

7.

4-3-人类肿瘤的85～90%是由环境因素引起的，其中哪种因素所占比例最大？

A. They were making a lot of noise.
B. They were looking after the queen.
C. They were dancing in a unique way.
D. They were looking for a new box to live in.