血容量不足 A．中心静脉压3cmH2O、血压低 B．中心静脉压13cmH2O、血压低

下面语段划线处都有语病，请改正过来。

　　生命没有高低贵贱之分。① 尽管我们很渺小，但应该必须让自己知道“我很重要”。对于父母，我们是他们安享晚年的保障；②对朋友，我们是他们倾诉衷肠。任何时候都不看轻自己，要敢于说“我很重要”，这样，你的人生才会翻开新的一页。让我们昂起头，对着我们这颗美丽星球上的无数的生灵，响亮地宣布——我很重要！ 　

（1）第①处词语赘余，应删去的词语是                                                        

（2）第②处成分残缺，应在句末添加                                               ______  

近年来，我国执法机关兴起了“公开”制度，如公安机关的阳光执法工程，税务部门的税务公开制度，检察机关的检务公开制度，法院系统的审判公开制度等等。这些“公开”制度（）

A.有利于人民群众行使监督权

B.有利于保障人民当家作主的权利

C.有利于群众行使管理国家的权力

D.有利于进一步完善社会主义民主

（）等都属于使用普遍且安全问题突出的特种设备。

A、电气设备

B、机床

C、锅炉和压力容器

D、起重设备

E、电焊机

Have you had a headache during a test Have you ever been so worried about something that you have a headache or even can’t sleep at night If so, then you know what stress is. Stress is what you feel when you are worried about something. This worry in your mind can make your body feel bad. You may feel angry, sad, scared, or afraid—all of which can give you a stomachache or a headache.
However, there are different kinds of stress. Some kinds of stress are good and others are bad. Good stress might happen when you’re called to answer questions in class or when you have to give a speech. This kind of stress can help you to get things better done. For example, you may do a better job on your test if the stress pushes you to prepare better before the test.
On the other hand, bad stress can happen if stress lasts too long. You may not feel well if your parents are fighting, if a family member is sick, if you’re having problems at school, or if anything else makes you unhappy every day. That kind of stress isn’t going to help you. And it can actually make you sick.
The best way to fight stress is to have a balanced life. Make sure you keep your SELF in mind: Sleep, Exercise, Leisure(休闲), and Food. If you get enough sleep and eat properly, and if you exercise and leave time for fun, you’ll probably feel less stressed.

根据焊缝金属化学和冷却条件的不同，低合金钢焊缝的二次组织可出现以下四种转变，即（）体转变、珠光体转变、贝氏体转变和马氏体转变。