单选题：Mr. Smith was the only witness who said that the fire was __

题目内容：

Mr. Smith was the only witness who said that the fire was ________. A．mature
B．deliberate
C．meaningful
D．innocent

参考答案：

答案解析：

________ the danger from enemy action, people had to cope wi

________ the danger from enemy action, people had to cope with a severe shortage

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作为理想的饮用水水源首选应是（　　）A．降水 B．水库水 C．江河水 D．深层地下水 E．浅层地下水

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The _______of airplane engines announced a coming air raid.A．roar B．exclamation

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Itmaybenecessarytostop________inthelearningprocessandgobacktothedifficultpointsi

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