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activity前面加a还是an

activity前面加a还是an

activity前面不加a而是加an。因为activity是以元音开头的单词,所以用an,activity中文意思是n. 活跃状况,热闹;活动;热力活性,活度

Does such an activity constitute a criminal offence?难道这样的活动也算刑事犯罪吗?

The test records the electrical activity of the brain.