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【判断题】
在光线作用下使物体产生一定方向电动势的现象叫光电导效应。A.
正确
B.
错误
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】采用非水溶液滴定法测定盐酸麻黄碱含量,加入醋酸汞的目的是( )
A.
消除伪麻黄碱的干扰
B.
消除氢卤酸干扰
C.
消除氮原子干扰
D.
消除高氯酸干扰
E.
消除汞盐干扰
【单选题】Conversation 1--- 4. Why does the daughter want to go out?
A.
She wants to get away from her father.
B.
She doesn’t like the taste of the supper.
C.
She has finished eating.
D.
She has to attend a lecture.
【单选题】Conversation 4: Questions 16-20 are based on Conversation 4.Why does the man go to see the woman?
A.
To ask for help in choosing a topic for his term paper.
B.
To ask the professor to explain how to complete an assignment.
C.
To ask about a point raised in a recent lecture.
D.
To offer to help the professor with her research project.
【单选题】Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation. Why did the woman phone...
A.
She wanted to know more about it.
B.
She was a new comer and felt lonely.
C.
She wanted to learn a new language.
D.
She was interested in social activities.
【简答题】Conversation 4 Why does the woman mention the golden rule?A. To
show what is most important to do B. To show what is wrong to do C. To
give information. D. To answer a letter.
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