在软件工程中，软件需求分析阶段的工作，可以分为4个方面：需求获取、需求分析、编写需求

2005年9月28日，纪念孔子诞辰2556周年第一次全球祭孔大典在曲阜举行。这一活动得到了全世界人民的关注，西方明智之士也提出要吸取孔子的智慧来维护人类生存。孔子说：“君子和而不同，小人同而不和。”这里的“和而不同”主要说明了 ( )

A．各国的文化一律平等

B．中华文化具有特有的包容性

C．要和平不要战争

D．各国的文化可以交流，但不能相同

在托盘天平两端的烧杯中，分别盛有等质量、等质量分数的稀硫酸，天平平衡．然后向两只烧杯中分别加入一定量的Mg和Mg（OH）₂，两烧杯中的物质均恰好完全反应后，将游码移到1.8g处，天平重新平衡．则天平右盘中加入的物质及其质量为下列的（　　）

A．Mg 21.6g

B．Mg 1.2g

C．Mg（OH）₂2.9g

D．Mg（OH）₂21.6g

过一点能画______条直线，过两点能画______条直线．

Questions 61—65 are based on Passage Two:Passage TwoAs the 21st century begins, a number of leaders in politics, education, and other professions believe that the US must adopt some new values to go along with the old traditional ones. What new values should Americans adopt This is a very difficult question to answer. Certainly, a greater value should be placed on the conservation of natural reasources; Americans should learn to use less and waste less. But conservation has never been a p value to Americans, who have believed that their country offered an endless,abundant supply of natural resources.Recently, progress has been made—more and more Americans are recycling their paper,cans,bottles,and other goods—but old wasteful habits died hard. Furthermore,the need to protect the environment may conflict with the need for jobs,as in the Northwest ,where conservationists battle lumber companies that want to cut down ancient redwood trees. A belief in the value of conservation is still compared with other American values; it can become per only as Americans see the need for it more clearly.In addition,Americans may need to place a p value on cooperation on a national scale to achieve important national objectives. The American idea of the national good has never been based on national cooperation but rather on the freedom of the individual, maintaining those conditions that provide the greatest freedom and prosperity for the individual . It is far more difficult for Americans to accept shared sacrifice for the common good and wellbeing of the entire country. For example ,although the majority of Americans believe that it is extremely important to balance the national budget and reduce the deficit, they do not want to see cuts in government programs that benefit them personally.The American value of competition also hinders the development of a spirit of national cooperation. Competition sometimes encourages feelings of suspicion rather than the mutual trust that is necessary for successful national cooperation.Although Americans often cooperate successfully on the local level—in neighborhood groups and churches, for example, on the national level, they may see themselves as part of an interest group that is competing with other interest groups for government funds. A request by the national government for shared sacrifice may be seen as coercive and destructive rather than voluntary and constructive. However, the demands for the 21st century may compel Americans to place a greater value on national cooperation to solve problems that affect them all, directly and indirectly.

According to the passage, which of the following is NOT true()

A．Some Americans would not accept the value of conservation and environment protection, because this value would probably make them unemployed.

B．Many Americans have been used to wasting, so it will be difficult for them to accept the new value of conservation.

C．Some old values are still having a p influence on American people, although they are harmful in this new age.

D．Most Americans have fully realized the need to protect the environment, so they have taken measures to recycle junked goods.

在一次交通事故中，一辆载有30吨“工”字形钢材的载重汽车由于避让横穿马路的摩托车而紧急制动，结果车厢上的钢材向前冲出，压扁驾驶室．关于这起事故原因的物理分析正确的是（　　）

A．由于车厢上的钢材有惯性，在汽车制动时，继续向前运动，压扁驾驶室

B．由于汽车紧急制动，使其惯性减小，而钢材惯性较大，所以继续向前运动

C．由于车厢上的钢材所受阻力太小，不足以克服其惯性，所以继续向前运动

D．由于汽车制动前的速度太大，汽车的惯性比钢材的惯性大，在汽车制动后，钢材继续向前运动