The researchers found out the origins of same-sex behavior.

admin2022-08-09  37

问题 The researchers found out the origins of same-sex behavior.

选项 A、正确
B、错误

答案B

解析 原文说:The origins of same-sex behavior are unclean也就是说,出现同性恋行为的原因尚不清楚,因此,是错误的。
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