投资者到证券经纪商处委托买卖证券之前，双方要签订（）。
A.证券交易委托代理协议
B.证券登记协议书
C.清算交收协议
D.证券买卖交割承诺协议
参考答案：A
解析：要开展经纪业务，证券经纪商首先必须与客户建立具体的委托代理关系，客户与证券经纪商需签订《证券交易委托代理协议书》，与其指定的存管银行、证券经纪商签订《客户交易结算资金第三方存管协议书》。
| 阅读下文，从所给的四个选项中选出一个最佳答案。 |
| Mr White is talking to a psychiatrist. Mr White: "Every night when I get into bed, I think that someone is under my bed. I then get up and look. There is never anyone there. When I go under the bed and lie down, I get the idea that there is someone on top of the bed. I then get up and look and I never find anyone on top of the bed. This goes on all night, up and down, up and down. I nearly get mad. Do you think you can help?" Psychiatrist: "I think I can. All you have to do is to visit me twice a week for the next two years and I think I can cure (治愈) you. The visits will costs ＄75 an hour." Mr. White: "That is an awful lot of money for a working man like me. I'll have to talk it over with my wife and let you know." The next week Mr. White phoned the Psychiatrist. Mr. White: "I won't be back, sir. My wife solved the problem. She cut the legs off the bed." |
| 1. Mr. white is _____ . |
[ ] |
| A. ill in mind(精神) B. crazy about sports C. interested in his bed D. afraid of someone in his house |
| 2. The psychiatrist works as a _____. |
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| A. teacher B. volunteer C. doctor D. listener |
| 3. The psychiatrist told Mr. White to _______. |
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| A. ask his wife for help B. visit him a lot more C. cut the legs off the bed D. believe his abilities |
| 4. Mr. White became all right with the help of ______. |
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| A. the psychiatrist B. his wife C. his bed D. a working man |
| 5. Which of the following statements is TRUE? |
[ ] |
| A. Mr. White is in a good health because he exercises every day. B. The psychiatrist made a lot of money by helping Mr. White. C. Mr. White has a smart wife who is very helpful. D. Mr. White went mad before he went to see the psychiatrist. |