单项选择题

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单项选择题
Which requests of Tanzania and Zambia were refused by the international body
A. To permit them to sell ivory.
B. To permit them to sell 90 tons of ivory.
C. To change the protected status of African elephants.
D. To improve conservation by selling the ivory.
单项选择题
Which of the following statements is INCORRECT according to the news item
A. Curiosity will be the seventh NASA spacecraft to land on the Mars if successful.
B. Curiosity will trave at about 20,000 kilometers per hour when it hits the Martian surface.
C. Curiosity is the size of a small car and has 17 cameras.
D. Curiosity will be lowered to the Martian surface on cables and cut loose before the rocket pack blasts off.
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