合同变更是指( )由双方当事人依法对合同的内容所进行的修改。

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问题单项选择题

A．合同成立以前和合同履行完毕以前

B．合同成立以后和履行完毕以后

C．合同成立以后和履行完毕以前

D．合同成立以前和履行完毕以后

答案

参考答案：C

填空题

根据所给词的适当形式填空。

1. There is no need _______ (thank) me. That's what I should do.

2. What _______ you _______ (do) last night? I _______ (write) a letter to my pen pal.

3. He_______ (have) a busy day off last week.

4. All of the children had fun_______ (visit) the dolphins in the aquarium.

5. How _______ (be) your school trip last summer? Oh, it_______ (be not) too bad. I enjoyed myself.

6. On my way back home I _______ (meet) my math teacher Mr Wang the day before yesterday.

7. _______ she often_______ go hiking with her mother?

8. _______ (not be) late for school next time.

9. I _______ (see) some dolphins on the beach when I _______ (go) there with my parents last

weekend.

10. It _______ (be) snowy this morning. You must wear more clothes.

选择题

2007年10月15日，中 * * 党第十七次全国代表大会在北京人民大会堂隆重开幕。十七大报告用一批新名词彰显了中 * * 党的活力和生命力。“初次分配和再分配都要处理好效率和公平的关系，再分配更加注重公平”。右图所示，经济效率和社会公平之间的组合模式有多种多样，你认为比较恰当的组合应该在

A．AA′区间之内

B．BB′区间之内

C．A′或B′点上

D．AB区间之内