A.Cautious.
B.Doubtful.
C.Negative.
D.Favourable.
解析:选D 推理判断题。根据第五段第一句可知,这次具有里程碑意义的发现只有哈勃望远镜能够完成。由此可推知,作者对哈勃望远镜持支持态度。故选D项。
3.What does the underlined part in Paragraph 6 mean?
A.An underground ocean has been found in Europa.
B.The presence of an underground ocean in Europa is not possible.
C.It is now certain that there is an ocean on Europa.
D.No evidence has shown the existence of an ocean on Europa.
解析:选C 句意猜测题。根据第六段中的“and NASA has announced plans to send ... with liquid water”可知,因为Europa上有水存在,NASA才宣布要在Europa上搜寻地外生命;由此可推知,画线句意为:科学家们已经证实Europa上存在海洋。故选C项。
4.What type of writing does this passage belong to?
A.A term essay.
B.A news report.
C.An experiment report.
D.An exploration review.
解析:选B 推理判断题。根据第一段“Washington: NASA has announced evidence ...”及文章内容可推知,本文为一篇资讯报道。故选B项。
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