【題目】It's great fun to go hiking in the valley, but ________ we shouldn't turn a blind eye to the potential risks.
A.on the other hand
B.on the contrary
C.as a matter of fact
D.as a result

【答案】A
【解析】考查固定詞組。A. on the other hand另一方面；B. on the contrary相反；C. as a matter of fact事實(shí)上；D. as a result結(jié)果。句意：去山谷徒步旅行是很大的樂趣，但是，另一方面我們不應(yīng)該對潛在的風(fēng)險視而不見。根據(jù)句意可知選A。

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