患眼视力降至眼前手动，眼底不能窥入，为下列哪种白内障的临床表现（） A.皮质性白内障

已知：X₂、Y₂、Z₂、W₂四种物质的氧化能力W₂> Z₂>X₂>Y₂，下列氧化还原反应能发生的是[ ]

A、2NaW+Z₂ = 2NaZ+W₂

B、2NaX+Z₂ = 2NaZ+X₂

C、2NaY+W₂ = 2NaW+Y₂

D、2NaZ+X₂ = 2NaX+Z₂

海上货物运输保险承保的风险主要包括（）。

A.海上风险

B.社会风险

C.政治风险

D.外来风险

E.技术风险

机动车辆保险的附加险有（）。

A.车辆停驶损失险

B.新增加设备损失险

C.第三者责任险

D.无过失责任险

E.自燃损失险

     Have you ever felt sick or had a headache during a test? Have you ever been so worried about

something that you can't sleep at night?    1   This worry in your mind can made your body feel bad. You

may feel angry, frustrated, scared, or afraid—which can give you a stomachache or a headache.

         2    Good or normal stress might happen when you're called to answer a question in class or when

you have to give a speech. This kind of stress that can help you to get things better done.    3   

     But bad stress can happen if the stressful feelings keep going over a long time.  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 you're

going through anything else that makes you upset every day.     4    

         5    That means making good decisions about how to spend your time. If you're only dealing with

school stuff and have no time to play, you can get stressed. Make sure you keep yourself in mind: Sleep,

Exercise , Leisure(休闲),and Food. If you take care of yourself and get enough sleep and food, and if

you exercise and leave time for fun stuff, you'll probably be less stressed out!

A. However, there are two different kinds of stress.

B. Can you tell a kind of stress from another one?

C. The best way to keep stress away is to have a balanced life.

D. That kind of stress isn't going to help you, and it can actually make you sick.

E. Since bad stress is harmful for us, you'd better try to change it into good stress.

F. If so, then you know what stress is. Stress is what you feel when you are worried or uncomfortable

about something.

G. For example, you may do a better job on your test if the stress pushes you to prepare well before the

test.

违反权利人有关保守商业秘密的要求，披露、使用或者允许他人使用其所掌握的商业秘密行为，属于民事行为，应以经济惩罚为主，尽量避免使用刑事处罚。（）