◎ 题干
At first the experiment went on well, but _____ problems we hadn't expected turned up later and it failed.
[     ]
A. outstanding  
B. curious
C. powerful  
D. various
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“At first the experiment went on well, but_____ problems we hadn't expected turned up later and it failed.[ ]A. outstandingB. curiousC. powerfulD. various…”主要考查了你对  【形容词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。