We must take _______ measures to protect the natural environment, otherwise, one million species that are alive today will have

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问题 We must take _______ measures to protect the natural environment, otherwise, one million species that are alive today will have become extinct.

选项 A、sharp
B、drastic
C、dramatic
D、sturdy

答案B

解析 本题测试形容词用法。四个形容词的意义分别是:A. sharp锋利的,尖利的;B.drastic激烈的,迅猛的。正符合题意。C.dramatic戏剧性的;D.sturdy强健的。句意为:我们必须采取断然措施保护自然环境,否则当前幸存的物种中有一百万种将会灭绝。
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