界址点的精度要求最高为（）。 A．5cm B．10cm C．15cm D．20cm

下列词语中加点的字，每对读音都不相同的一组是（   ）

A．沁园春/揿门铃舰舸/蛤蚧餐具/惨剧豇豆/扛鼎

B．游说/著书立说赠送/憎恨谓语/喟然瞳孔/胴体

C．契约/锲而不舍枯水/洞窟闪烁/瓦砾矿藏/藏族

D．蔚蓝/遗之千金崛起/撅嘴狭隘/溢满花瓣/辫子

阅读短文，并完成后面的任务。

                                                               ①_____

     THE Earth is about 4600 million years old. Many of the things that we have done are good,

but many more are not good for the Earth.

     Pollution is ②(地球上的一种严重问题). In big cities cars and buses have polluted the air.

Many people in cities now have very bad health problems.

     ③(工厂也对土地和水造成了污染). As a result, many rivers and lakes are now polluted.

All over the world, people have cut down millions and millions of trees. Did you know many

kinds of animals and plants are now disappearing (消失)? In particular, trees are very important

④because they produce oxygen (氧气) and control the climate.

     Now, many people are beginning to take these problems seriously. Fhey are making wind

generators (发动机) and planting new trees. There is a group in our class that picks up the garbage

at school. Whether the weather is hot or cold we always do it. ⑤I think we are settinS a Sood

example to everyone else.

    I hope, in the future, the sky can be clearer, the water cleaner, and the land greener. Then both

people and animals can have a greener Earth.

1. 请在①处给出文章的题目。

    ____________________________ 

2. 请把②处的汉语翻译成英语。

    ____________________________

3. 请把③处的汉语翻译成英语。

    ____________________________

4. 请把④处的画线部分翻译成汉语。

    ____________________________

5. 请把⑤处的画线句子翻译成汉语。

    _____________________________

纪律也是一种行为规范，但它是介于法律和（）之间的一种特殊的规范。

A、法规

B、道德

C、制度

D、规范

关于胎盘功能的描述，不正确的是（）

A.物质代谢

B.气体交换

C.分泌雌、孕激素

D.分泌人绒毛膜促性腺激素

E.胎盘激素主要是由细胞滋养层细胞分泌的

为什么说资本主义经济内部闲置资金的调剂是现代信用产生和运行的基础