Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)
All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.
Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch: we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.
When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.
According to the passage, it is difficult to be certain about the distant future of the universe because we ______.
A.have too many conflicting theories
B.do not have enough funding to continue our research
C.are not sure how the universe is put together
D.have focused our investigations on the moon and planets
第1题
在Word2003中,同一节中的文档具有相同的页边距,页码格式,()和页脚
A.业块
B.页号
C.页眉
D.页头
第2题
在Word2003中,同一节中的文档具有相同的页边距,页码格式,页眉和()。
A.页块
B.页号
C.页脚
D.页头
第3题
以下关于Word2000文档设置的描述中,正确的是(15)。
A.整篇文档的页眉页脚必须相同,页边距可以不同
B.整篇文档的页眉页脚可以不同,页边距必须相同
C.整篇文档的页眉页脚必须相同,页边距也必须相同
D.整篇文档的页眉页脚可以不同,页边距也可以不同
第4题
● 在Word 2000中,下列说法正确的是 (43) 。
(43)A.整篇文档的页眉页脚必须相同,页边距也必须相同
B.整篇文档的页眉页脚必须相同,页边距可以不同
C.整篇文档的页眉页脚可以不同,页边距必须相同
D.整篇文档的页眉页脚可以不同,页边距也可以不同
第5题
● 在Word 2000中,下列说法正确的是 (43) 。
(43)A.整篇文档的页眉页脚必须相同,页边距也必须相同
B.整篇文档的页眉页脚必须相同,页边距可以不同
C.整篇文档的页眉页脚可以不同,页边距必须相同
D.整篇文档的页眉页脚可以不同,页边距也可以不同
第6题
A.整篇文档的页眉页脚必须相同,页边距可以不同
B.整篇文档的页眉页脚可以不同,页边距必须相同
C.整篇文档的页眉页脚必须相同,页边距也必须相同
D.整篇文档的页眉页脚可以不同,页边距也可以不同
第7题
A.整篇文档的页眉页脚必须相同,页边距也必须相同
B.整篇文档的页眉页脚必须相同,页边距可以不同
C.整篇文档的页眉页脚可以不同,页边距必须相同
D.整篇文档的页眉页脚可以不同,页边距也可以不同
第8题
A.文档中所有奇偶页的页眉必然都不相同
B.文档中所有奇偶页的页眉可以都不相同
C.每个节中奇数页页眉和偶数页页眉必然不相同
D.每个节的奇数页页眉和偶数页页眉可以不相同
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