下列关于Java程序结构的说法有误的是( )。A. package语句可以有一个

题型:单项选择题

问题:

下列关于Java程序结构的说法有误的是( )。

A. package语句可以有一个或多个

B. import语句可以有一个或多个

C. 接口定义可以有一个或多个

D. 每个Application程序可以包括许多方法,但必须有且只能有一个main方法

考点:计算机等级考试JAVA计算机二级(Java)57
题型:单项选择题

一个静止的质点,在两个互成锐角的恒力F1、F2作用下开始运动,经过一段时间后撤掉其中的一个力,则质点在撤力前后两个阶段的运动性质分别是(  )

A.匀加速直线运动,匀减速直线运动

B.匀加速直线运动,匀变速曲线运动

C.匀变速曲线运动,匀速圆周运动

D.匀加速直线运动,匀速圆周运动

题型:单项选择题

第三部分阅读理解

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

By analyzing academic data from 10 states, representing the testing of more than 7.2 millions of youths, U.S. researchers found that gender differences in math scores were extremely small among all ethnic groups in grades 2-11.

These findings are in contrast to earlier results from 1990 that indicate measurable differences favoring males in complex problem-solving, beginning in the high school years.

Janet Hyde from University of Wisconsin and colleagues reported their study results in the journal Science on Friday.

Currently, women are largely absent from the highest levels of careers in mathematics, the physical sciences, and engineering. In the United States, Ph.D. programs in engineering currently average only about 15 percent women, and similar statistics have led to stereotypes (成见)about girls and women lacking in mathematical ability.

Now, it is clear that the general population no longer shows a gender difference in mathematical skills, according to this latest report.

And this new data on academic performance in the United States shows that students are tested frequently on "recall" and "skill/concept" items, but rarely on "strategic thinking"(战略思维) or "extended thinking" concepts.

If standardized tests do not assess (评估)the sorts of reasoning that are crucial to careers in science and math, then the skills may not be taught, putting American students at a disadvantage to students in other countries where testing and instruction focuses on more challenging content. "This is a gap that should be fixed," Hyde said.

56. What is the best title of the passage?

A. A new study result about math.                   B. No gender differences in math.

C. Girls are not good at math.                       D. Girls do better in math than boys.

57. The underlined word “crucial” in the last paragraph most probably means______.

A. necessary      B. unimportant         C. important    D . cruel

58. What Hyde said in the last paragraph means that ________.

A. standardized tests should assess the sorts of reasoning so that the skills may be taught

B. testing and instruction focuses on more challenging content in the USA

C. students in other countries are cleverer than American students

D. students should be tested frequently on "recall" and "skill/concept" items

59. The passage is most probably taken from _______.

A. a science magazine B. a research paper        C. a personal diary D. a newspaper

题型:单项选择题

电功率的表达式为()。

A、P=A/t=UI

B、P=I2R

C、P=U2/R

D、以上全是

题型:单项选择题

机车车辆无论是否属于空、重状态,均不得超出机车车辆限界,其上部高度至钢轨顶面的距离不得超过( ),其两侧最大宽度不得超过3400mm。

A.6000mm

B.4800mm

C.3600mm

D.3000mm

题型:单项选择题

汇出行用加押电传或SWIFT(环球银行间金融电讯网络)形式,指示汇入行付款给指定收款人的汇款形式称为()。

A.电汇

B.信汇

C.票汇

D.托收

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