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People did not begin to use unmanned vehicles in undersea exploration until recently because of______. By "more challenging" (P
People did not begin to use unmanned vehicles in undersea exploration until recently because of______. By "more challenging" (P
admin
2012-09-10
88
问题
People did not begin to use unmanned vehicles in undersea exploration until recently because of______.
By "more challenging" (Para. 6), the author means ______.
选项
A、more interesting
B、more demanding
C、more attractive
D、more’dangerous
答案
B
解析
参见第六段第一句,从句子结构推断出,Though undersea exploration is more challenging…,it has a distinct advantage…,though引导从句后的内容与主句的内容相反。
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本试题收录于:
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