单项选择题

Questions 29 and 30 are based on the following news.
According to conservationists, why does the Internet pose a threat to endangered species

A. Buyers and sellers can employ anonymity in trading on the Internet.
B. Buyers and sellers can make use of the information on the global market.
C. It is much cheaper to trade them on the Internet.
D. A lot of endangered species are available on the Internet.

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单项选择题

By citing the remarks of Diogenes, the speaker wants to say that

A. we need to learn the skills of talking.
B. listening is easier than talking.
C. it is important to be an attentive listener.
D. we should talk less and do more.

单项选择题

Which of the following is NOT mentioned in the news

A. XMRV was found in tumor samples.
B. XMRV can be found in healthy blood.
C. The causes of XMRV haven’t been determined,
D. A lot of people were infected by XMRV.

Questions 29 and 30 are based on the following news. According to conservationists, why does the Internet pose a threat to endangered species 您的浏览器不支持 audio 元素。

Questions 29 and 30 are based on the following news.
According to conservationists, why does the Internet pose a threat to endangered species