题目内容

Completethe sentences with the proper form of the given words or expressions.confirm represent annoysympathetic unburden go with1. There’sgot to be somebody in the world that you can _______________ yourself to.2. I’mhere if you need a _______________ ear.3. Hehad fame, money and everything that _______________ it.4.Research has _______________ that the risk is higher for women.5.Wang Hai was chosen to _______________ thecompany at the conference.6. Shewas _______________ with his son for forgetting to make a call.

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Complete the sentences with the proper form of the given verbs.1. I am looking forward to _______________ her soon. (meet)2. He put off _______________ a decision till he had more information. (make)3. He left the restaurant without _______________ his bill. (pay)4. Is there any chance of _______________ his mind? (change)5. I gave up _______________ to persuade him to continue with his studies. (try)6. If no one helps him, he may end up _______________ a beggar. (be)

名词解释:变焦距镜头。

拍摄人面部表情,起到借景抒情效果的是柔焦镜头。

A. 对
B. 错

影响缓冲能力的主要因素是()

A. 缓冲溶液的pH值与缓冲比
B. pKa与缓冲比
C. 总浓度与缓冲比
D. 缓冲液的总浓度与pH值

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