A. that most Americans are immigrants B. due to their skin color C. that they speak their language differently from Americans D. that they were free to keep their heritage 参考答案:B 答案解析:[试题分析] 本题为细节题。 [详细解答] 这道题的答案在第二段的第四句话, "due to"一词就是"because of"的意思。
A. try to control unpleasant stimuli B. turn off the electricity C. behave passively in controllable situations D. become abnormally suspicious 参考答案:C 答案解析:文章第二段第三句“But if the animals are confronted with situations they have no control over,they later beha
第29题: [单项选择]在电子阅览室上机,读者不可以() A. 上网阅览、下载信息资料 B. 删除或安装软件 C. 发电子邮件 D. 查阅、复制光盘资料 参考答案:B