试题与答案

定义数组可使用命令DIMENSIONX(2,3),则数组中包含的元素个数为【 】

题型:填空题

题目:

定义数组可使用命令DIMENSIONX(2,3),则数组中包含的元素个数为【 】。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:由本节练习2的分析,我们知道本题给出的有限状态自动机对应于3型文法。有限自动机分为确定的有限自动机和非确定的有限自动机。确定的有限自动机的确定性表现在映射δ:VT×Q→Q是...

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题型:选择题

如图所示,两平行虚线间的区域内存在着匀强磁场,矩形金属闭合线圈abcd的ab边与磁场边界平行,已知磁场区域的宽度大于bc的边长.线圈从静止开始在向右的水平恒力F的作用下运动,在ab边刚进入磁场区域的瞬间,线圈受力恰好平衡.下面的说法中正确的是[  ]

A.在线圈进入磁场区域的过程中,恒力F对线圈做功的功率保持不变

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题型:阅读理解

阅读理解(满分40分)

第一节(共15小题年每小题2分,满分30分)

请阅读下列短文,从每题所给的四个选项(A、B、C、D)中,选出最佳答案,并在答题卡上将该选项的标号涂黑。

A

When I was a child, I often dreamed of the time when I could leave home and escape to the city. We lived on a farm, in the winter especially, we wear quite out off from the outside world. As soon as I left school, I packed my bags and moved to the capital.

However, I soon discovered that one big disadvantage is money. It costs so much to go out, not to mention basics like food and housing. Another disadvantage is pollution. I suffer from asthma(哮喘), and  the air is so bad that I am afraid to go outside. Then there is the problem of traveling round. Although I have a car, I seldom use it became of the traffic jams. One choice is to go by bicycle, but that can be quite dangerous.

Of course there are advantages. First, there is so much to do in the city, whatever you tastes in culture or entertainment(娱乐活动). Besides, there are wonderful jobs and greater chances of moving to a more important job or position. Finally, if you like shopping, the variety of goods is very surprising --- and , what is more, shops are often only a short walk away.

Is life better then, in the city? Perhaps it is , when you are in your teens(十几岁)or twenties. However, as you get older, and especially if you have small children, the peace of the countryside may seem preferable. I certainly hope to move back there soon.

61. What was the writer always thinking about when he was a child?

A. Staying on the farm.                B. Moving to the countryside.

C. Leaving home for the city.           D. Running away from the school.

62. Which of the following is true about the writer?

A. He is very old now.                 B. He is in good health.

C. He prefers driving a car.             D. He lives in the city now.

63. In the passage, the writer tries to __________.

A. express his opinions about way of life      B. describe his life in the countryside

C. an interest in the outside world            D. persuade the reader to live in the city

64. How is the passage mainly developed?

A. By inferring.         B. By comparing.       

C. By listing examples.   D. By giving explanations.

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