棉40%、亚麻35%、黄麻25%的未漂白机织物

某中外合资经营企业的投资总额为280万美元，注册资本至少应有150万美元。( )

     Camping wild is a wonderful way to experience the natural world and, at its best, it makes little

environmental influence. But with increasing numbers of people wanting to escape into the wilderness,

it is becoming more and more important  to  camp  unobtrusively(不引人注目地) and  leave no mark.  

     Wild camping is not permitted in many places, particularly in crowded lowland Britain. Wherever you

are, find out about organizations responsible for managing wild spaces, and contact them to find out their

policy on camping and shelter building. For example, it is fine to camp wild in remote parts of Scotland,

but in England you must ask the landowner's permission, except in national parks.  

     Camping is about having relaxation, sleeping outdoors, experiencing bad weather, and making do

without modern conveniences. A busy, fully-equipped campsite（野营地)seems to go against this, so

seek out smaller, more remote places with easy access to open spaces and perhaps beaches. Better still,

find a campsite with no road access: walking in makes a real adventure.  

     Finding the right spot to camp is the first step to guaranteeing a good night's sleep. Choose a campsite with privacy and minimum influence on others and the environment. Try to use an area where people have obviously camped before rather than creating a new spot. When camping in woodland, avoid standing

dead trees, which may fall on a windy night. Avoid animal runs and caves, and possible homes of biting

insects. Make sure you have most protection on the windward side. If you make a fire, do so downivind

of your shelter. Always consider what influence you might have on the natural world. Avoid damaging

plants. A good campsite is found, not made-changing it should be unnecessary.

1. You needn't ask for permission when camping___________.      

A. national parks in England      

B. most parts of Scotland      

C. crowded lowland Britain      

D. most parts of England

2. The author thinks that a good campsite is one_________.    

A. with easy access    

B. used previously    

C. with modern conveniences    

D. far away from beaches

3. The last paragraph mainly deals with__________.    

A. protecting animals    

B. building a campfire    

C. camping in woodland    

D. finding a campsite with privacy

4. The passage is mainly about___________.    

A. the protection of campsites    

B. the importance of wild camping    

C. the human influence on campsites    

D. the dos and don'ts of wild camping

患者男，11岁，下颌呈相对后退位，口唇闭合呈现口唇肌肉紧张，覆5mm，覆盖9mm，磨牙远中咬合关系，上前牙拥挤明显，ANB为10°，SNA为84．5°，X线片显示4个第三磨牙存在，下颌无拥挤，Spee曲线深

尖牙远中移动可采用（）.

A.扩大螺旋簧推尖牙远中移动

B.Ⅲ类牵引

C.颌间垂直牵引

D.每个托槽单纯结扎

E.尖牙的远中部弯制垂直关闭曲

核算岗位人员每月核对定期结算单位货款余额，每（）协助上级财务部门与顾客进行定期结算货款余额的签认对账工作。

A.1个月

B.季度

C.半年

D.一年

影响植物群落垂直结构的主要因素是______；影响动物群落结构的主要因素是______。