物体受引力作用后所受重力的大小叫做物体的（）。A、质量B、重量C、比重D、密度

某公司决定采用某开源电子邮件系统作为公司内部使用的电子邮件系统，但该系统无法完全满足公司需求，需要对该软件进行一定程度的扩充和修改。在项目正式启动前，需要对该软件项目的规模进行估算，适合的软件规模估算方法是 (21) 。

A．模糊逻辑法
B．功能点法
C．标准构件法
D．修改法

结合所给语境，在横线处填入适当的语句，组成语义连贯的排比句。（4分）

为表达全国各族人民对青海玉树地震遇难同胞的深切哀悼，国务院决定，2010年４月21日举行全国哀悼活动，全国和驻外使领馆下半旗志哀，停止公共娱乐活动。当国旗随着国人的泪水缓缓垂下，我们仿佛看到了               ，却也真实地看到了一双双奋力抢救生命的手臂；我们仿佛听到了孩子失去亲人的哭声，却也真实地听到了                ；我们仿佛感到了                ，却也真实地感到了                       。

2004年11月1日法院受理了甲公司的破产宣告申请,2005年3月1日法院裁定甲公司宣告破产，以下说法正确的是()

A．甲公司与乙公司在2004年9月1日签订了货物买卖合同，乙公司已按照合同约定于2004年9月20日交付了货物，合同约定甲公司于2005年6月1日向乙公司支付货款100万元，乙公司可以申报100万元的破产债权

B．甲公司于2003年1月10日用自有房产作为抵押向丙银行借款100万元，约定于2004年12月31日支付本金及利息，丙银行行使抵押权后尚有20万元未清偿，丙银行的20万元债权是破产债权

C．用公司于2002年12月1日发行两年期公司债券，债券的持有人享有的债权是破产债权

D．甲公司于2000年1月4日向丁银行借款300万元，戊公司作为保证人，甲公司的借款于2006年6月30日到期，戊公司申报的债权不属于破产债权

Passage One

There are two types of people in the world. Ahhough they have equal degree of health and wealth and other comforts of life, one becomes happy and the other becomes unhappy. This arises from the different ways in which they consider things ,persons, events and the resulting effects upon their minds.
People who are to be happy fix their attention on the convenience of things:the pleasant parts of conversation, the well prepared dishes, the goodness of the wine and the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied. By their remarks, they sour the pleasure of society, offend (hurt) many people, and make themselves disagreeable everywhere. If this turn of mind was founded in nature, such unhappy persons would be the more to be pitied. The intention of criticizing and being disliked is perhaps taken up by imitation. It grows into a habit, unknown to its possessors. The habit may be p, but it may be cured when those who have it realize its bad effects on their interests and tastes. I hope this little warning may be of service to them, and help them change this habit.
Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck. Those people offend many others;nobody loves them, and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they aim at getting some advantages in social position or fortune, nobody wishes them success. Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections, no one will defend or excuse them, and many will join to criticize their wrong doings. These should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others. If they do not, it will be good for others to avoid any contact with them. Otherwise, it can be disagreeable and sometimes very inconvenient, especially when one becomes mixed up in their quarrels.

People who are unhappy______.

A．always consider things differently from others

B．usually are affected by the results of certain things

C．usually misunderstand what others think or say

D．always discover the unpleasant side of certain things

(91～92题共用题干)男性，75岁，心绞痛发作持续4小时。含硝酸甘油无效。心电图示Ⅱ、Ⅲ、aVF导联呈弓背样抬高6mm，V1～3导联ST段水平样压低4mm，偶发室性期前收缩1次，诊断为急性心肌梗死。

最可能是因为

A．吻合口瘘

B．吻合口感染

C．术后正常出血

D．吻合口部分黏膜坏死脱落