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问题 单项选择题

国债现券、企业债（含可转换债券）、国债回购以及以后出现的新的交易品种，其交易佣金标准由证券交易所制定并报中国证监会和国家发改委备案，备案（）天内无异议后实施。

A.10

B.15

C.20

D.30

答案

参考答案：B

解析：掌握各类交易费用的含义和收费标准。

选择题

2010年上海世博会17座中国企业馆之一的石油馆“油立方”，其建筑外表皮首次用一种自主研制的新型环保材料聚碳酸酯[（C16H14O3）n]，聚碳酸酯是一种热塑性材料．该材料美观保温、隔热、抗氧化能力强，在日常生活中有广泛的应用前景．下列说法错误的是（　　）

A．聚碳酸酯由CHO三种元素组成

B．聚碳酸酯属于有机合成材料

C．聚碳酸酯分子中含有臭氧分子

D．聚碳酸酯属于高分子化合物
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补全对话，情景问答
根据对话内容，从方框中选出五个合适的句子补全对话。
A. That's a good idea.
B. How do you study English?
C. You can even study in the bus on the way to school.
D. I'm having trouble learning English.
E. Well, listening to the pop music is the best way.
F. Well, listening can help.
G. What's the problem?
A: You looked worried, Peter.
B: I am, Mr Woods. (1)             
A: You said you liked English. (2)              
B: I can't get the pronunciation right.
A: (3)               Why don't you borrow the teacher's tapes? You can listen to them at home 
    and repeat the sentences that are difficult for you.
B: (4)              But what about all the new words? I forget a lot of new words.
A: You can write the new words in your notebook and study them at home. (5)             
B: That might really help! Thanks.
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