A man is being questioned in relation to the _____murder last night.
A. advised B. attended C. attempted D. admitted
科目:高中英语 来源:2015届河北省石家庄市高二上学期开学考试英语试卷(解析版) 题型:单项填空
Many countries are increasing their use of natural gas, wind and other forms of ______.
A. energy B. power C. force D. strength
查看答案和解析>>
科目:高中英语 来源:2015届江西吉安白鹭洲中学高二下学期第一次月考英语试卷(解析版) 题型:单项填空
Eating too much fat can _______heart disease and cause high blood pressure.
A. result from B. result into C. devote to D. contribute to
查看答案和解析>>
科目:高中英语 来源:2015届广西桂林十八中高二下学期开学考试英语试卷(解析版) 题型:阅读理解
Most children, even the youngest of children, are delighted to be around cats and dogs. But these pets carry plenty of germs and allergens(过敏原), prompting researchers to ask: Are cats and dogs really safe for children?
A study finds that, contrary to many parents’ fears, owning cats or dogs does not increase a child’s risk of developing allergies, and in fact, may actually protect them. The study’s lead author, Dr. Dennic Ownby of the Medical College of Georgia, says that even he was “very surprised” by the results. Ownby and colleagues followed more than 470 children from birth to age 6 or 7, comparing those exposed to cats and dogs during their first year of life to those who were not.
By using skin-prick tests for detecting common allergies, the researchers found that, contrary to what many doctors had been taught for years, children who had lived with a pet were not at greater risk.
Even more remarkable, children who had two or more dogs or cats had an even greater reduction, up to 77 percent, in risk of allergies. Researchers suggest this protective effect may be the result of early exposure to lots of bacteria that are carried by dogs and cats. Exposing young children to these bacteria helps "exercise" their immune systems early in life so that they're better able to resist allergic diseases later.
There's something very important in that first year of life when the immune(免疫) system is developing that we can retrain it away from an allergic response, said Dr. William Davis.
And while researchers are not encouraging parents to buy dogs or cats just to reduce a child’s allergy risk, they say if a family already has one or more animals, there's no need to get rid of them.
1.Why do the researchers feel “very surprised” by the results of the study?
A. Because the results are contrary to their expectation.
B. Because so many children are playing with cats and dogs.
C. Because parents are so much worried about their children.
D. Because children with animals may develop allergies easily.
2.Compared with children who have pets,those who haven’t ______.
A. will lose the chance to develop immune system
B. will reduce the harm from bacteria
C. may suffer allergic diseases more often
D. can keep doctors away
3.The underlined word “it” in the fifth paragraph refers to________.
A. the early life B. an allergic disease
C. something important D. immune system
4.What is the passage mainly about?
A. How to protect your kids from allergies
B. Bacteria do good to your kids
C. Your pets may be helping your kids
D. Advantages of owning pets
查看答案和解析>>
科目:高中英语 来源:2015届广西桂林十八中高二下学期开学考试英语试卷(解析版) 题型:单项填空
—What do you think we can do for our aged parents?
—You ____ do anything except to be with them and be yourself.
A. oughtn’t to B. don’t have to C. mustn’t D. can’t
查看答案和解析>>
科目:高中英语 来源:2015届广西桂林十八中高二下学期开学考试英语试卷(解析版) 题型:单项填空
Paper money was in ____ use in China when Marco Polo visited the country in ____ thirteenth century.
A. the; /B. the; theC. /; theD. /; /
查看答案和解析>>
科目:高中英语 来源:2015届广东阳东广雅中学阳春实验中学高二上期末联考英语卷(解析版) 题型:阅读理解
Louis Pasteur, the famous French chemist and bacteriologist(微生物学家), invented “pasteurization”. In 1854 Pasteur was made head of the department of science at the University of Lille, and it was there that he made one of his most famous discoveries. Lille was a major center for wine and beer-making, and some of the local wine-makers asked Pasteur if he could help solve the problem of keeping wine fresh. At that time, it was believed that food and drinks go “bad” due to a purely chemical process. But during a series of experiments Pasteur proved that tiny living organisms(微生物)caused food and drinks to go bad. In the case of wine and beer the organisms are already present in the form of the various yeasts (酵母) that caused the fermentation(发酵) process. Pasteur discovered that heating the wine gently for a few minutes after it had fermented would kill off the yeast that was left in the wine, with the result that the wine would remain fresh for much longer. He also proved that food and drinks could be turned bad by other organisms that were present in the air, and that they too would keep fresh much longer if they were kept in airtight containers.
The heating process was so successful that it made Pasteur famous. It was named “pasteurization” in his honour, and by about 1900 it had been widely used for processing and bottling cows’ milk. The result was a huge drop in the number of bottle-fed babies dying from infant diarrhea(婴儿腹泻)and from that time on it has been a standard treatment for milk and many other food products. This simple process has saved thousands, possibly millions, of lives worldwide.
1.Pasteur became ___________ in 1854.
A. the chairperson of the science department at the University of Lille
B. the director of a chemical laboratory at the University of Lille
C. the general manager of a large beer-making company
D. the president of the University of Lille
2.According to the passage, Lille was a major center for ___________ in the mid-19th century.
A. growing grain crops B. making beer and wine
C. doing chemical research D. producing various kinds of yeasts
3.In the last sentence of Paragraph 1, the underlined word “they” refers to ___________.
A. wine and beerB. food and drinks C. the various yeastsD. other organisms
4.We can infer from the passage that Pasteur’s discovery __________.
A. is no longer widely used for treating milk and other food products
B. did not bring much profit to the wine makers in Lille
C. has done a lot of good to children in the world
D. has greatly reduced the number of wars in the world
5.According to the passage, we know it is that causes food and drinks to go bad.
A. a purely chemical process. B. tiny living organisms(微生物)
C. keeping them in airtight containers. D. the heating process
查看答案和解析>>
科目:高中英语 来源:2015届广东阳东广雅中学阳春实验中学高二上期末联考英语卷(解析版) 题型:单项填空
-- What made your skin look so terrible?
--_______ to the sunlight for a long time.
A. Because it was exposed B. After being exposed C. Being exposed D. Exposed
查看答案和解析>>
科目:高中英语 来源:2015届山西省高二上学期期末考试英语试卷(解析版) 题型:单项填空
___ the right kind of training, these teenage soccer players may one day grow into other international stars.
A. Giving B. Having given C.To give D. Given
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com