问题 单项选择题

分子流行病学是阐明疾病和健康状态相关生物标志(或分子事件)在人群和生物群体中的分布及其影响因素,并研究防治疾病、促进健康的策略和措施的科学。根据定义,分子流行病学的组成学科为

A.分子生物学和分子遗传学

B.分子病原学和分子免疫学

C.流行病学和分子遗传学

D.传统流行病学和分子生物学

E.分子生物学和分子病原生物学

答案

参考答案:D

解析:分子流行病学是应用先进的技术测量生物学标志的分布情况,结合流行病学现场研究方法,从分子或基因水平阐明疾病的病因及其相关的致病过程,并研究疾病的防治和促进健康的策略和措施的科学。分子流行病学研究的内容包括传统流行病学和分子生物学。

阅读理解

In the 60s, people asked about your astrological (about star) sign. In the 90s, they want to know your website.   1  Your website is an electronic meeting place for your family, friends and potentially, millions of people around the world. Best of all, you may not have to spend a cent. The web is filled with all kinds of free services and all it takes is some time and creativity.

 2 Like the table of contents of a book or magazine, the home page is the front door. Your site can have one or more pages, depending on how you design it.

While web pages vary greatly in their design and content, most use a traditional magazine layout(版面设计).At the top of the page is a banner(横幅). Next comes a greeting and a short description of the site. Pictures, text, and links to other websites follow.

 3 Think about whom the site is for and what you want to say. Next, gather up the material that you want to put on the site.

While there are no rules you have to follow, there are a few things to keep in mind:  4 If you are too much at the beginning, you may never get the site off the ground. You can always add to your site.

Less is better. Most people don’t like to read a lot of long text online.   5 

Smaller is better. Since it can take a long time to download large image files, keep the file sizes small.

Have the rights. Don’t put any material on your site unless you are sure you can do it legally. Always remember to get the permission from the writer first.

Now it’s time to roll up your sleeves and start building

A.Start simply.

B.Break it into small pieces.

C.Draw a rough layout on a sheet of paper.

D.Many websites are considered very interesting.E.Before you start building your site, do some planning.

F.Think of your home page as the starting point of your website.

G.These days, having a web address is almost as important as a street address.

单项选择题