轮回选择

肺循环的特点是____，主要功能为____。

根据材料内容，将A-E五个句子填入文中空缺处，使短文内容完整、正确。

Do you often travel? Do you often stay in a hotel? Most Chinese hotels often provide guests with disposable (一次性的)things, like toothbrushes, toothpaste, shampoo and slippers._____ 小题1:_____. But, if you travel to Beijing, remember to bring your own things. Starting from June, some hotels in Beijing will no longer provide guests with these disposables. ___小题2:___.

Many disposable things are made of plastic.____ 小题3:___.It is a waste of natural resources(资源) and is very bad for the environment. Do you know, one Chinese person makes as much as 400 kg of waste a year! Most of that waste comes from disposable things. In Beijing, people throw away about 19,000 tons of plastic bags and 2,320 tons of plastic lunch bowls every year!   ______小题4:_____. So the less plastic we throw out, the better. So, wherever you travel, bring your own things and use them again and again.

Back at home and school, you can also do something to make our world a better place.____ 小题5:_____: Use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let it dry. Then you can use it over and over again. Do not use paper cups. At your school dining-room, use your own bowl and chopsticks instead of disposable ones.

To protect our environment and our home, it is very necessary and important for us to save natural resources.

A．Try to do these things in your daily life

B．People throw them away after only using them once.

C．They want to ask people to use less disposable things.

D．Plastic can take between 100 and 400 years to break down.E. Many guests like the idea because they don’t have to bring their own.

背景

某场道工程施工总承包合同额为880万元，工期为10个月。承包合同规定：

(1)工程预付款的额度为15%。

(2)工程预付款从未施工工程尚需的主要材料及构配件价值相当于工程预付款时起扣，每月以抵充工程款的方式陆续收回。主要材料及构件费比重按65%考虑。

(3)工程质量保修金为承包合同总价的3%，经双方协商，业主从每月承包商的工程款中按3%的比例扣留。在保修期满后，保修金及保修金利息扣除已支出费用后的剩余部分退还给承包商。

(4)除设计变更和其他不可抗力因素外，合同总价不作调整。

经业主的工程师代表签认的承包商各月实际完成的工作量如下表所示。

工程结算数据表(单位：万元)

问题

(1)说明工程预付款的有关规定。

(2)说明工程预付款的计算方法。

(3)计算本工程的预付款。

(4)计算工程预付款的起扣点并说明起扣时间。

(5)计算1～6月以及其他各月监理工程师应签证的工程款和应签发付款凭证的金额。

近距离腔内治疗鼻咽癌适应证为()

A.限于鼻咽壁、浅表病灶 

B.鼻腔受侵 

C.咽旁间隙明显受侵 

D.口咽受侵 

E.颅底骨破坏 

证券组合管理的特点主要表现为投资的集中性和风险与收益的匹配性。（）