题目内容
Scientists said the smaller the airborne particles, the more ______ they are to cause illness.
| A.possible | B.likely |
| C.probable | D.perhaps |
B
试题分析:考查形容词。本题考查短语的固定搭配:be likely to有可能……。句意:科学家说,空气尘埃粒子越小,它们造成疾病的可能性越大。故B正确。
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