单项选择题


Questions 29 and 30 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now, listen to the news.
What can we know about the elephants in zoos

A．They generally breed well.
B．They may not suffer health problems.
C．They may die relatively young.
D．They are cleverer than the wild elephants.
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单项选择题
Why the aviation fuel is more harmful to the environment than others
A．Because of the poisonous quality.
B．It has to do with the position of the pollution.
C．The aviation fuel is special.
D．There is too much dirt in its resulting smoke.
单项选择题
What can we learn from the conversation
A．There is no special rate for a group reservation.
B．The travel agency has to pay 5% of the total cost as a deposit.
C．The group includes 28 tourists and two leaders.
D．14 standard rooms are reserved in total.
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