The split between humans and living apes is thought by some scholars 15 to 20 million years ago.
A. to occur
B. occurring
C. to have occurred
D. having occurred
The split between humans and living apes is thought by some scholars 15 to 20 million yea
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解决时间 2021-12-03 11:50
- 提问者网友：雪舞兮
- 2021-12-03 04:15
最佳答案
- 五星知识达人网友：長槍戰八方
- 2019-01-11 01:55
A. to occurB. occurring(答案→)C. to have occurredD. having occurred解析：本题考查非谓语动词。 be thought to do“被认为做某事”，因为后边是 15 to 20 million years ago 已经发生了，因此用不定式的完成式。
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- 1楼网友：旧脸谱
- 2019-07-15 17:25
谢谢解答
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