皮皮学，免费搜题
登录
搜题
【单选题】
下列各句中标点使用正确的一项是( )A.
是参加校合唱团？还是参加校舞蹈队？我拿不定主意。
B.
地铁6号线开通以后，我坐车回家只需二、三十分钟。
C.
“山重水复疑无路，柳暗花明又一村”。这两句诗经常用来比喻在困境中出现转机。
D.
创造，是人类智慧高度发展的结晶；创造，也是打开成功大门的钥匙。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】What does the man mean when he says this:
A.
He wants to change the topic of the talk.
B.
He wants the professor to elaborate on a point in the lecture.
C.
He is trying to remember something the professor already said.
D.
He wants to correct some mistakes that the professor made.
【单选题】听力原文：W: There is a man in the reception area. He says he has an interview with Louis at 11:30. M: Oh, Louis must have forgotten about that. His parents came to visit him from Boston and he's probably ...
A.
In a meeting room
B.
At the office
C.
In Boston
D.
In New York
【单选题】听力原文： US President George W. Bush says he recognizes human beings contribute to global climate change but he remains unyielding in his opposition to the Kyoto Accord on the issue. Bush made the remark...
A.
To call on more effort to reduce human beings' contribution to global climate change.
B.
To include more developing countries into the Accord.
C.
To continue to oppose to the Accord.
D.
To sign the treaty to cut emissions of carbon dioxide.
【简答题】当外界存在一个很强的干扰信号,由于收信机的非线性仍能造成对有用信号增益的降低(受到抑制)或噪声提高,使接收机灵敏度下降,这种干扰称为( )干扰. A. 同频道 B. 邻道 C. 杂散辐射 D. 阻塞
相关题目：
参考解析：
知识点：
题目纠错 0
发布
