第8题: [单项选择]What has happened since the end of the ice age() A. Many species have developed a habit of migration. B. Many species have become less sensitive to climate. C. Many new species have come into existence. D. Many species have moved further north. 参考答案:D
第10题:[单选题]健康是指 A. ⽣理、⼼理和社会适应能⼒均处于完好状态 B. 身体强壮 C. ⽆病 D. ⼼理素质良好 E. 社会适应能⼒强 参考答案:A
第11题: [单项选择]How far is the second floor window from the ground A. About 12 feet. B. About 6 feet. C. About the height of an average man. D. Nearly 10 feet. 参考答案:A 答案解析:[分析] 推理题。文中说一个普通人抓窗户悬吊时,跳下来大概要跳six feet的高度,而six feet相当一个常人的高度,所以窗户离地面的高度大概是twelve feet。因此A正确。