一位患者因下前牙急性根尖周炎行根管治疗,第一次拔髓开放后症状明显缓解,第二次检查患牙

题型:单项选择题

问题:

一位患者因下前牙急性根尖周炎行根管治疗,第一次拔髓开放后症状明显缓解,第二次检查患牙叩痛(+),扪痛(+),医师作了根管预备和封药,第二天面部肿痛.分析原因最可能是()。

A.机体抵抗力降低

B.根管内药效丧失

C.根管感染清创不足

D.操作中带入新感染

E.根管预备时机选择不当

考点:广东住院医师广东住院医师全科医学广东住院医师全科医学模拟试卷(十一)
题型:单项选择题

阅读理解。

     I love charity (慈善) shops and so do lots of other people in Britain because you find quite a few of them

on every high street. The charity shop is a British institution, selling everything from clothes to electric goods,

all at very good prices. You can get things you won't find in the shops anymore. The thing I like best about

them is that your money is going to a good cause and not into the pockets of profit-driven companies, and you

are not damaging the planet, but finding a new home for unwanted goods.

     The first charity shop was opened in 1947 by Oxfam. The famous charity's appeal to aid postwar Greece

had been so successful it had been flooded with donations (捐赠物). They decided to set up a shop to sell

some of these donations to raise money for that appeal. Now there are over 7,000 charity shops in the UK. My

favourite charity shop in my hometown is the Red Cross shop, where I always find children's books, all 10 or

20 pence each.

     Most of the people working in the charity shops are volunteers, although there is often a manager who gets

paid. Over 90% of the goods in the charity shops are donated by the public. Every morning you see bags of

unwanted items outside the front of shops, although they don't encourage this, rather ask people to bring things

in when the shop is open.     

     The shops have very low running costs: all profits go to charity work. Charity shops raise more than £110

million a year, funding (资助) medical research, overseas aid, supporting sick and poor children, homeless and

disabled people, and much more. What better place to spend your money? You get something special for a very

good price and a good moral sense. You provide funds to a good cause and tread lightly on the environment.

1. The author loves the charity shop mainly because of ____.

A. its convenient location

B. its great variety of goods

C. its spirit of goodwill

D. its nice shopping environment

2. The first charity shop in the UK was set up to ____.

A. sell cheap products

B. deal with unwanted things

C. raise money for patients

D. help a foreign country

3. Which of the following is TRUE about charity shops?

A. The operating costs are very low.

B. The staff are usually well paid.

C. 90% of the donations are second-hand.

D. They are open twenty-four hours a day.

4. Which of the following may be the best title for the passage?

A. What to Buy a Charity Shops.

B. Charity Shop: Its Origin & Development.

C. Charity Shop: Where You Buy to Donate.

D. The Public's Concern about Charity Shops.

题型:单项选择题

轮胎气压过高有何危害?

题型:单项选择题

引起败血症的细菌种类经常变迁,由于大量抗生素的使用,目前增加最明显的细菌是()

A.革兰阳性球菌

B.革兰阴性杆菌

C.真菌

D.厌氧菌

E.条件致病菌

题型:单项选择题

分光光度法测定土壤样品中总砷时,有机物会干扰测定,应加酸并加热分解,以消除其于扰。

题型:单项选择题

假定某投资者在去年初购买了某公司股票。该公司去年年末支付每股股利2元,预期今年支付每股股利3元,以后股利按每年10%的速度持续增长。假定同类股票的必要收益率是15%,那么正确的结论有()。

A.该公司股票今年初的内在价值介于56元至57元之间

B.如果该投资者购买股票的价格低于53元,则该股票当时被市场低估价格

C.如果该投资者购买股票的价格高于54元,则该股票当时被市场高估价格

D.该公司股票后年初的内在价值约等于48.92元

E.该公司股票后年初的内在价值小于48.92元

更多题库