安装工程保险中试车考核期的责任期限为（）。 A.0.5 B.1 C.2 D.3

根据下边的概念图可知，下列叙述正确的是

A．A表示的碱基有5种

B．B表示的是核糖

C．D表示核糖核苷酸

D．D表示脱氧核糖核苷酸

阅读短文，把A-E五个句子填入文中空缺处，使短文内容完整正确 。  

     There are many animals in the world. Some are dangerous, but some are not Some live in the forests.      ___1__.We can often see tigers, elephants, monkeys in zoos  Among them pandas only live in China.

     Pandas are lovely animals. Most of them live in the deep forests of Sichuan Province in China. ___2_. 

Their shoulders, legs, ears and eyes are black. Pandas are usually very heavy. ___3__ . However, 

pandas  are very agile. They can climb trees as easily as some other animals do.

     Pandas live mainly on bamboo leaves. They have big and sharp teeth. Every day each grown-up

panda eats about 15-30 kilos of bamboo leaves. ___4_. Pandas also have spare time hobbies.They

are climbing trees and sleeping

     Sadly, there are riot many pandas left in the world. ___5__ .This is why the Chinese government is      doing its best to protect pandas against being hurt and killed.

A. Their fur is white

B. Some live in the zoos

C. And they usually spend 10-20 hours eating

D. That's because some bad hunters are trying to kill them for money

E. Some of them can be about l. 5 metres tall and weigh about 100 kilos

—Must I take a taxi?

—No, you _____. You can take my car. [ ]

A. don't have to

B. had better to

C. must not

D. don't

规划软件的运算速度与有关（）

A.规划区域的面积大小数字地图精度的高低

B.所规划的基站数和载频数量的多少

C.所出仿真效果图种类的多少

D.要求仿真次数的多少

素质教育目标是稳定性与（）的统一。