2. 外语
  3. If all the viruses on the planet were to disappear, a global catastrophe would ______, and the natural ecosystems of the earth w

If all the viruses on the planet were to disappear, a global catastrophe would ______, and the natural ecosystems of the earth w

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问题 If all the viruses on the planet were to disappear, a global catastrophe would ______, and the natural ecosystems of the earth would collapse in a spectacular crash under burgeoning populations of insects.
选项 A、varnish
B、disperse
C、contaminate
D、ensue
答案D
解析 D项“ensue跟着发生，继起”符合题意。如：A hand grenade exploded by accident and I got lost in the ensuing confusion．(枚手榴弹意外地发生了爆炸，接着是片混乱，使我不知所措。)其他三项“A项varnish修饰，掩饰；B项disperse分散；C项contaminate污染”都不正确。本题空格处是说场全球性的大灾难将会跟着发生。因此D项为正确答案。
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