第4题: [单项选择]People should be able to come to a decision about ions in the air if they ______. A. note their own reactions B. move to a healthier area C. observe domestic animals D. watch how wealthy people behave 参考答案:A 答案解析:细节题。
[解析] come to a decision是make up their own minds的同义转述，故可定位在末段倒数第二句话，意思和A)“注意他们的反应”正符合。
第16题: [单项选择]在下面的命令中，用来检查通信对方当前状态的命令是______。 A. telnet B. traceroute C. tcpdump D. ping 参考答案:D 答案解析:[知识点] Internet的基本应用
[评析] telnet命令用来进行远程登录，ping命令则用来调查通信对方的当前状态，traceroute用来追踪由自己的终端主机到达接收方的路由器和路径，t
第24题: [单项选择]血栓闭塞性脉管炎早期的典型症状是（） A. 肢端发绀，发凉 B. 间歇性跛行 C. 肢端干性坏疽 D. 下肢肌肉萎缩 E. 持续性疼痛 参考答案:B
第25题: [简答题]Questions 9-13 Complete the sentences below with NO MORE THAN THREE WORDS OR A NUMBER from the passage. The patent complaints concerning mobile-phone has risen by______annually since 2006. 参考答案:20%
