被称为"阴脉之海"的是（） A.任脉 B.冲脉 C.督脉 D.带脉 E.阳维脉

糖类是人体所需能量的主要来源．日常饮食中，糖类主要来自下列食物中的（　　）

A．米饭

B．蔬菜

C．牛奶

D．豆制品

固体分散体难溶性载体材料是

A．PVP

B．泊洛沙姆188

C．PEG

D．EC

E．木糖醇

阅读理解。

     Su Hua is studying at Cambridge, UK. She has bought a bicycle and is worried about security. Her

friend, Kate, found this article and sent it to her.

     Introduction

     A lot of crime is against bicycles. About 150,000 bicycles are stolen every year and most are never

found. You can prevent this happening by following a few careful steps.

     Basic Security

     Do not leave your bicycle in out-of-the-way places. Always lock your bicycle when you leave.

Secure it to lampposts or trees. Take off smaller parts and take them with you, for example lights and

saddles(车座).

     Locks

     Get a good lock. There are many different types in the shop. Buy one that has been tested against

attack. Ask for a recommendation from a bike shop.

     Marking

     Security marking your bike can act as a deterrent to a thief. It can also help the police find your

bicycle. It should be clearly written and include your postcode and your house or flat number. This will

provide a simple way to identify your bicycle.

     Registration

     There are a number of companies who will security mark your bicycle for you. They will then put

your registration number and personal details on their computer database. Then if your bicycle is found

it will be easy to contact you.

     Finally

      Keep a record of the bicycle yourself: its make, model and registration number. You can even take

a photograph of it, this will prove the bicycle belongs to you.

1. Which part of the article gives you information on how to lock up your bicycle when you leave it?

A. Locks      

B. Marking      

C. Registration      

D. Basic Security

2. The underlined phrase "act as a deterrent to a thief" means__________ .

A. help you recognize your bike          

B. help the police find your bicycle

C. stop someone stealing your bicycle      

D. stop you worrying about your bike

3. The article advises you to keep a record of your bicycle ____________. 

A. in the bike shop and your computer

B. in a police station and security company

C. in a security company and your university

D. by yourself and in a security company

4. The main purpose of this article is _____________. 

A. to tell you what to do if your bicycle is stolen

B. to suggest ways of keeping your bicycle safe

C. to give you advice on where to buy a good lock

D. to say why you shouldn't keep your bicycle in a quiet place

病例对照研究中，选择偏倚不包括(　　)

A．入院率偏倚

B．回忆偏倚

C．检出症候偏倚

D．无应答偏倚

E．错误分类偏倚

学校正式产生于（）

A.原始社会

B.奴隶社会

C.封建社会

D.资本主义社会