题目内容

Your teacher of Chinese is a young lady____comes from Beijing.

A. who
B. which
C. whom
D. whose

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Would you tell me where to get the dictionary____?

A. what i need
B. i need
C. which i need it
D. that i need it

Ex.3. Listen to the following conversation twice and fill in the blanks with the missing words. Barbara: Surely cell phones have negative effects. One of them is【填空1】You had better believe it.Tony: What do you mean?Barbara: Look at students! They play games and talk to their friends 【填空2】 on their cell phones.Tony: It's a problem, isn't it?Barbara: Sure it is. 【填空3】I'm trying to make is they don't get time for studies.Tony: Actually, cell phones are quite useful in studies. 【填空4】.Barbara: What kind of use are you talking about?Tony: For example, you can use it to get information of any subject【填空5】.Barbara: But everything has two sides.Tony: Yes. It's also important to know【填空6】of cell phones.Barbara: Especially for college students.

对A级DSC设备功能描述不正确的是：

A. 具有DSC呼叫的全部功能
B. 可以进行遇险多频呼叫
C. 具有DSC的部分功能
D. 具有自动应答功能

平导轨可以使零部件沿着固定的轨迹产生位移。支承导轨一般呈（）,导向滑块放置在导轨上,可以沿导轨作直线滑行。平导轨常与其他类型导轨组合使用。