我国原发性高血压引起死亡的原因中最常见的是（）. A.心力衰竭 B.脑血管意外 C.

Swimming is very popular in the world. Most people like swimming in summer, even in the other three seasons. Water makes people feel cool and swimming makes people keep healthy.

If you swim in a wrong place, it may not be safe. A lot of people died when they were enjoying themselves in the water, and most of them were students. Now some people are not careful enough in swimming. They often think they can swim so well that nothing will happen to them in water. If you go swimming in summer, don’t forget that a lot of good swimmers have died in water. They died not because they couldn’t swim, but because of their carelessness (粗心). Don’t get into water when you are alone. If there is a “No Swimming” sign（标记）, don’t get into water. If you remember these, swimming will be safe and enjoyable (舒服的).

根据短文内容，选出能完成所给句子的最佳答案。

小题1:____ like swimming in summer.

A．Few people

B．Most people

C．Only students

D．Only swimmers小题2:Swimming can make people keep ____ .

A．clean

B．fat

C．healthy

D．thin小题3:It’s ____ to swim in a wrong place.

A．wonderful

B．interesting

C．not safe

D．not careful小题4:Some swimmers died in water because they are ____ .

A．students

B．children

C．not strong

D．too careless小题5:If you go swimming, you shouldn’t ____ when you are alone.

A．get into water

B．die in water

C．swim too long

D．swim too badly

现代设备工程学将设备的生命周期分为两个阶段，分别是( )。

A．设备决策与规划阶段

B．设备决策与形成阶段

C．设备使用和维护阶段

D．设备制造与使用阶段

E．设备制造与安装阶段

请读程序段：
char str[]="ABCD",*p=str
print("%d\n",*(p+4));
程序段的输出结果是______。
A) 68 B) O C) 字符'D'的地址 D) 不确定的值

制度内容一般以（）形式表述

A.流程图

B.列表

C.记录

D.条文

上消化道出血量的估计哪项不正确（）

A.粪隐血试验阳性，表示每日出血量5～10ml以上

B.黑粪表示每日出血量50～100ml以上

C.呕血表示胃内积血量250～300ml以上

D.出现全身症状，提示出血量超过700ml

E.出现周围循环衰竭表现，提示短期内出血超过1000ml