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问题 单项选择题

关于自由时差和总时差，下列说法错误的是( )。

A．自由时差为零，总时差必定为零

B．总时差为零，自由时差必定为零

C．在不影响总工期的前提下，工作的机动时间为总时差

D．在不影响紧后工作最早开始的前提下，工作的机动时间为自由时差

答案

参考答案：A

解析：[知识点] 网络计划时间参数的概念

材料分析题

材料一：2007年1月12日，中国在联合国安理会否决了由美国和英国提出的关于缅甸问题的决议案。

材料二：2009年1月，我国第二批赴苏丹达尔富尔维和工程兵大队组建完成前往任务区执行维和任务。

2009年12月，联合国秘书长潘基文对中国政府宣布在2020年前使单位国内生产总值二氧化碳排放比2005年下降40％至45％的目标表示赞赏，对中国政府为联合国哥本哈根气候变化大会最终达成一定积极成果所做的努力和贡献表示肯定。

运用所学的《国家和国际组织常识》知识回答下列问题：

（1）联合国属于什么类型的国际组织？请评价国际组织的作用。

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（2）上述材料是如何反映中国在联合国的地位和作用的？

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单项选择题

About a week ago, when I was playing basketball at our local park, I noticed a small group of boys picking on a smaller, skinnier boy. They were (21) him names and even pushed him to the ground and kicked dirt in his face. (22) I saw that, I walked over to the group.
I stepped (23) them and the smaller boy, and asked them politely what this boy had done worthy of (24) they were doing to him. One of the boys replied, "He’s weird. " At that, I asked one of the boys if he thought his friend was weird, and the (25) was "No." So, I asked another boy what the word "weird" (26) , and he said, "Different." That was my cue (暗示). I told them that everyone is (27) , and that they all looked just as different to the other boy as he did to them. They all stood (28) for a moment, and then the most amazing thing happened. One of the boys helped the small boy off the ground and then said sorry to him. He (29) to let him play with them.
I thanked the boy for being so (30) As I looked around, I realized that there were dozens of other people at the park (31) no one else had stopped to help this boy. I felt happy that the boy was p enough to stand up against his friends to (32) someone in need, but I felt sad that (33) else had even taken a second look.
I hope that my action helped them (34) that they could have made a difference with a little (35) , and maybe next time they will be the ones who choose to help.

Ⅱ. 完形填空

/Close
通过下面短文，掌握其大意，然后再各题所给的四个选项(A、B、C和D)中选出一个最佳选项。

A．refused

B．expected

C．offered

D．prepared
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