第十五篇：(Unit 5,Passage 2) Racket, din clamor, noise, whatever you want to...

第十四篇：(Unit 5,Passage 1) A controversy erupted in the scientific communi...

第13篇 The case for college has been accepted without question for more than a ...

Passage two (Vicious and Dangerous Sports Should be Banned by Law) When you think...

第11篇(Unit Four,Passage 2) Which is safer-staying at home, traveling to work o...

第10篇(Unit4 Passage1) Most of us are taught to pay attention to what is saidth...

第9篇(Unit 3 Passage 4) We can begin our discussion of population as global iss...

第8篇(Unit 3 Passage 3) Let children learn to judge their own work. A child lea...

第七篇(Unit 2 Passage 3) The discovery of the Antarctic not only proved one of...

第六篇(Unit 2 Passage 2) Without regular supplies of some hormones our capacit...