说明西北荒漠化的原因及防治措施。

钓鱼岛是中国固有领土的一部分。日本决定把钓鱼岛为日本固有领土的主张纳入课本中,引起了中国人民的强烈愤怒。日本当局错误主要在于它违背了联系具有        

A．普遍性

B．客观性

C．多样性

D．整体性

阅读理解

     Why do so many of us watch birds with great interest? Perhaps the easiest answer is that birds seem

to be the commonest, most attractive and easiest observed wildlife around us. No matter where you are,

at home, on a mountain-top, in mid-ocean or deep in a city, there are birds around for you to watch.

     When you go birdwatching, you should always make sure that your clothes are suitable for the weather and for the habitat you are visiting. As a general rule, it is better to pack a little too much clothing than risk getting cold and wet.  In really hot weather, a hat of some sort is sensible. For cooler weather, a practical outfit would be jeans, a roll-neck sweater.

     Don't worry about the equipment while birdwatching. It is perfectly possible to see and enjoy birds

without any special equipment, but a whole new world opens up to you once you have your first binoculars. Distant birds stop being little dots against the sky or water, and take on shapes and colours, and

feathers of bird will have a real beauty of their own.  Binoculars allow you to identify birds correctly, and

give you a wonderful chance to spy on them going about their daily lives. However, never look directly at

the sun using binocular, because direct sunlight can hurt the eye.

     Using binoculars is one way to bring birds closer to you, but another way of improving your

birdwatching is to get nearer to them. If wild creatures don't know you are close to them, they will

continue to behave naturally, and perhaps pass close by you. Fortunately, birds have no sense of

smell-so we don't have to worry about the wind blowing our scent to them and frightening them.  

But all birds have good eyesight, much better than ours.  Birds also have good hearing: their lives and

their ability to find food depend on these senses.

     So what does the birdwatcher need to do? Always move about quietly, do not give the birds

advance warning of your arrival or they will move away. Do your best to avoid sudden movement.

Always remember to put the birds' interests first. When you have finished looking, don't just stand up

and walk away, scaring birds in all directions.

1. The underlined word "binoculars" refers to __________.

A. something that can protect your eyes

B. glasses used for looking at distant object

C. books on birds of different shapes and colours

D. special equipment for birdwatcher to keep warm

2.  Why does the birdwatcher have to move quietly?

A. Because birds don't like to make any noise.

B. Because birds are unable to see slow movement.

C. Because birds can smell man's scent if he moves quickly.

D. Because birds may hear the sound of the sudden movement.

3. According to the passage, what does a birdwatcher need to do?

A. Keep a certain distance from birds

B. Bring a little more clothes with him

C. Behave naturally while watching birds

D. Take interest in the birds he is watching

制冷剂应具备哪些基本要求？

财产清查按清查的对象和范围，可以分为( )。

A．重点清查和非重点清查

B．定期清查和不定期清查

C．全面清查和局部清查

D．报送清查和抽查

按照无线重大工程项目管理流程的规定，工程项目经理应该负责以下哪些管理工作？（）

A、工程成本管理；

B、项目资源管理；

C、项目进度控制；

D、现场组织安装设备；

E、工程合作方管理