(单选题)

The underlined word toxic can be replaced by ______.

A.unpleasant

B.dangerous

C.poisonous

D.stressful

参考答案：C

参考解析：

词义猜测题。根据文章“The comments were more likely to be toxic when others had already left toxic comments.”可知，当其他人已经发表了有毒的评论时，后面的评论更有可能是有毒的。因此toxic意为“有毒的”。故选C。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语