以下描述中，符合科学城特点的是（）。A、自发、半自发形成 B、在政府指导下，由地方联合

食品原料、食品添加剂、食品相关产品进货查验记录应当保存几年？

阅读下面的材料，然后根据材料内容回答所提问题。

     What do you think is the most common illness? Do you get ill sometimes? We are lucky to live now,

because there are lots of medicines to make people better. 

     The most common illness in the world is the cold. It often begins with a sore throat. Then you sneeze

and your nose runs. You usually have a headache too. Often you cough later. It's not a very bad illness,

but you can feel quite ill.

     There isn't a cure (治愈) for a cold, but you can take medicines to make you feel better. For instance,

aspirin (阿司匹林) can stop your headache. It is good to rest, and to drink a lot of water too. A doctor

once said to me, "With the proper (适当的) medicine, a cold will continue for seven days. With no

medicine, it will continue for a whole week!"

     Where does our medicine come from? A long time ago, people knew that some plants made them feel

better. They ate the leaves, the roots, the fruit, or the seeds of plants. For instance, the juice of lemons

makes a sore throat feel better.

     In modern times, scientists have looked at these plants, and found out which chemicals (化学物质)

are in them. Many of our medicines today are made from those chemicals.

     There are some illnesses which we can't cure yet. And nobody has found a cure for old age. But

because of modern medicines, many people now live longer than their grandparents.

1. How does a cold often begin?

    ___________________________________________________

2. Can aspirin stop a headache?

    ___________________________________________________

3. How long does a cold usually continue?

    ___________________________________________________

4. What kind of juice makes a sore throat feel better?

    ___________________________________________________

5. What are many of our medicines today made from?

    ___________________________________________________

依据《建设项目环境影响评价资质管理办法》规定，以下（）不得申请环境影响评价资质。

A.各大学及中等专科学校

B.各行业的各级环境监测机构

C.各环境科学类研究机构

D.为建设项目环境影响评价提供技术评估的机构

E.为建设项目环境影响评价提供公众参与服务的机构

室间隔缺损伴明显肺动脉高压时可有下列表现，但除外（）

A.左心室显著增大

B.原有心脏的杂音显著增强

C.肺动脉瓣区第二音明显亢进

D.X线显示肺动脉段明显突出

E.右心室压力明显增高

格里菲思和艾弗里所进行的肺炎双球菌的转化实验证实了（）

①DNA是遗传物质

②RNA是遗传物质

③DNA是主要的遗传物质

④蛋白质和多糖不是遗传物质

⑤S型细菌的性状是由DNA决定的

⑥在转化过程中，S型细菌的DNA可能进入了R型细菌的细胞

A.②④⑤⑥

B.①④⑤⑥

C.③④⑤⑥

D.②③⑤⑥