On Venus there is a lot of__________.A.w

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问题 On Venus there is a lot of__________.A.waterB.carbon dioxideC.carbon monoxideD.oxygen

选项 A.water
B.carbon dioxide
C.carbon monoxide
D.oxygen

答案 B

解析 由第二段的最后一句话中的“there is only a tiny amount of water there(Venus)”得知,A选项错误。第三段结尾说明,藻类通过火箭运往金星,然后“In a fairly short time,the algae will break down thecarbon dioxide into oxygen and carbon”,说明金星上有大量的二氧化碳。C和D选项错误。故选B。
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