网络预约出租汽车驾驶员接单后，网络预约出租汽车客户端应用程序会向约车人提供驾驶员的（

用褐色公鼠甲分别与黑色母鼠乙和丙进行连续多次杂交，乙的子代有黑色和褐色，丙的子代全为黑色。那么亲本甲、乙、丙中，属于杂合子的是[ ]

A．甲

B．乙

C．乙和丙

D．甲、乙和丙

以下关于透明带的描述中，错误的是（）

A.由卵母细胞和卵泡细胞共同分泌形成

B.为一层嗜酸性的膜

C.位于卵母细胞与卵泡细胞之间

D.由其增生形成卵泡膜

E.从初级卵泡开始出现

《国际危规》中的5.2类危险货物一般是（）的物质。

A．含有放射性元素

B．含有高价态原子

C．含有过氧基的有机物

D．含有致病的毒素

阅读理解

     A car needs gas to run and your body also needs food to work for you. Eating the right kind of

food is very important. It can help your body grow strong, so take care of what you eat.

     There are four main food groups altogether. The dairy group(乳制品) has food like milk,

cheese and sour milk. The other three groups are the meat and fish group, the fruit and

vegetable group, and the bread and rice group. Each meal should have at least one food from all

four main groups. With all these food together, you will be given enough energy during the day.

     It is easy to get into bad eating habits. You may eat your breakfast in a hurry to get to school

on time. Or you may not have time for a good lunch. It may seem easy to finish your supper with

fish and chips all the time. But you will find yourself tired in these days and you can not think

quickly.

     Watching what you eat will help keep your body healthy and strong. It is also good to take so

me exercise. It will help you eat more if you take a walk or play games in the open air. Having a

good eating habit with some exercise is the key to your health.

1. Which of the following diets do you think is the best one?

A. Milk, bread, cabbage and beef.    

B. Eggs, tomatoes and chicken.  

C. Corn, fish, cream and pork.     

D. Rice, beancurd, apples, fish and chicken.

2. Which of the following is a good eating habit?

A. Going to school without any breakfast. 

B. Eating fish and chips for supper all the time.

C. Finishing your lunch in a very short time.

D. Having at least one food from all four groups each meal.

3. In the passage the writer mainly tells us that _____.

A. every person needs food to grow well

B. taking exercise can keep your body strong

C. right kind of food with exercise will keep you healthy

D. enough energy helps people think more quickly

4. The best title for the passage is _____.

A. The Four Food Groups                  

B. A Healthy Diet 

C. Your Body and Food                    

D. The key to Your Health

与柯萨奇病毒感染有关的是

A．A群分16个血清型，B群分2个血清型， IgM抗体阳性提示既往感染
B．A群分18个血清型，B群分3个血清型， IgC抗体阳性提示现症感染
C．A群分20个血清型，B群分4个血清型， IgG抗体阳性提示既往感染
D．A群分22个血清型，B群分5个血清型， IgM抗体阳性提示现症感染
E．A群分24个血清型，B群分6个血清型． IgM抗体阳性提示现症感染