精索静脉曲张多见于左侧的原因，但哪项应除外（） A.左侧的精索内静脉行程较长，并垂直

阅读理解。

     Happiness is for everyone. You don't need to care about those people who have beautiful houses with

large gardens and swimming pools or those who have nice cars and a lot of money and so on. Why?

Because those who have big houses may often feel lonely and those who have cars may want to walk on

the country roads at their free time.

     In fact happiness is always around you if you put your heart into it. When you are in trouble at school,

your friends will help you; when you study hard at your lessons, your parents are always taking good care

of your life and your health; when you get success, your friends will say congratulations to you; when you

do something wrong, people around you will help you to correct it. And when you do something good to

others, you will feel happy too. All these are your happiness.

     If you notice them you can see that happiness is always around you. Happiness is not the same as money.

It is a feeling of your heart. When you are poor, you can also say you are very happy because you have

something else that can't be bought with money. When you meet with difficulties, you can say loudly you are

very happy because you have more chances to challenge (挑战) yourself. So you cannot always say you are

poor and you have bad luck. As the saying goes life is like a revolving (旋转) door. When it closes it also

opens. If you take every chance you get, you can be a happy and lucky person.

1. Happiness is for ______.[ ]

A. those who have large and beautiful houses

B. those who have cars

C. those who have a lot of money

D. all people

2. When you do something wrong, ______. [ ]

A. people around you will help you

B. you will have no chance to challenge yourself

C. your classmates will laugh at you

D. you will be happy

3. Which is true according to the passage? [ ]

A. When you get success, your friends will be very proud of you.

B. You can get help from others when you make mistakes.

C. You can still be a happy person even if you have little money.

D. All the above.

4. Why do we say "Happiness is not the same as money"? Because ______. [ ]

A. money always brings happiness

B. money doesn't always bring happiness

C. everything can be bought with money

D. only rich people have happiness

患者36岁，入院检查，肾活检报告结果为系膜毛细血管性肾小球肾炎。下列治疗药物中，首选的是（）

A.呋塞米

B.头孢菌素

C.环磷酰胺

D.地塞米松

E.氯霉素

后浇带的留置位置应按设计要求和施工技术方案确定。( )

关于E-mail，下列说法正确的有( )。

A．电子邮件系统的主要功能是：收发电子邮件
B．要接收电子邮件，必须有一个放在本地计算机的电子信箱
C．一般不能将一个电子邮件发送给多个接收者
D．信箱地址由一个字符串组成，该字符串被“@”分成两部分

When a disease of epidemic proportions threatens the public, scientists immediately get to work, trying to locate the source of affliction and find ways to combat. Vaccination is one of the effective ways to protect the (1) population of a region or country which may be (2) grave risk. The process of vaccination allows the patient’s body to (3) immunity to the virus or disease so that, if it is encountered, one can fight it (4) naturally. To accomplish this, a small weak or dead (5) of the disease is actually injected into the patient in a controlled environment, (6) his body’s immune system can learn to fight the invader (7) . Information (8) how to penetrate the disease’s defenses is (9) to all elements of the patient’s immune system in a process that occurs naturally, in which genetic information is passed from cell to cell. This makes sure that (10) the patient later come into contact with the real problem, his body is well equipped and trained to (11) with it, having already done so before.

There are, however, dangers (12) in the process. (13) , even the weakened version of the disease contained in the vaccine proves (14) much for the body to handle, resulting in the immune system (15) , and, therefore, the patient’s death. Such is the case of the smallpox vaccine, (16) to eradicate the smallpox epidemic that nearly (17) the whole Native American population and killed massive numbers of settlers. (18) 1 in 10,000 people who receive the vaccine (19) the smallpox disease from the vaccine itself and dies from it. Consequently, the process, which is truly a (20) , may indeed hide some hidden curses.

8（）

A.for

B.of

C.to

D.on