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The smoke obscured the moon.
A:darkened
B:held
C:blackened
D:prevented
B:held
C:blackened
D:prevented
参考答案
参考解析
解析：本题考查的是对动词的认知。这句话的意思是：烟雾使月亮模糊不清。 obscure的意思是“使模糊，隐藏”，例如：The moon was obscured by clouds．月亮被云遮住了。选项A darkened使变暗；选项B held使停滞；选项C blackened使变黑；选项D prevented设置障碍阻止，例如：Scientists are trying to find ways to prevent disease．科学家们正试图找到预防疾病的方法。obscure和prevent意思最接近，所以选D。
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