A. it is easy to find jobs because it contains a complete list of jobs to choose from.

　　B. it can provide latest career opportunities.

　　C. it can provide lots of jobs but you should be careful because they are not guaranteed.

　　D. it is also convenient for employers to post free jobs, filter resumes and download resumes free of charge.

　　B

　　When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is dead.

　　One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.

　　But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like, “Wait—I'm not dead yet” when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait I'm not dead yet” quickly goes away. When other ants detect the “dead” chemical without the “not dead yet” chemical, they move away the body.

【江苏省2014届高三英语一轮复习 阅读理解攻略训练（12）】相关文章：

★ 河南省三门峡市2014高考英语一轮（暑假）基础训练（8）附答案

★ 辽宁省辽阳市2014高考英语单项选择一轮（暑假）训练（13）附答案

★ 【北京专用】2014届高考英语一轮复习方案课时作业：选修8 Unit 4 Pygmalion

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（3）含答案

★ 2014高考英语（新人教版）一轮基础训练（8）A、B卷（附答案或解析）

★ 【浙江专用】2014届高考英语一轮复习课时作业(二)必修1Unit 2《English around the world》

★ 2017届高考英语二轮复习课时训练：4（含解析）

★ 2017年高考英语二轮复习精品资料：专题16 书面表达（押题专练）（原卷版）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第12组（含解析）

★ 高考英语二轮复习如何提高高考英语听说能力