Experts have pointed out that the _____ of se...

Experts have pointed out that the _____ of severe punishments plays a major role in the growing food safety problem.

A. attendance　　　 B. absence　　　　 C. presence　 D. evidence

高二英语单项填空中等难度题查看答案及解析

A number of experts ________ today that the number of acupuncture points ________ the same as the 　 number of days in a year.

A. claims; are　　 　 　 B. claim; is

C. claims; is　　　　　　 D. claim; are

高二英语单项填空中等难度题查看答案及解析

Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom first appears.

A. treated　　　　　　　　　 B. to be treated

C. being treated　　　　　 D. be treated

高二英语单项填空中等难度题查看答案及解析

Chinese experts, based on the result of clinical trials, have __________ that Chloroquine Phosphate(磷酸氯喹), an antimalarial drug, has a certain _________ effect on the novel coronavirus disease (COVID-19), a Chinese official said here Monday.

The experts have "unanimously" suggested the drug be included in the next version of the treatment guidelines and __________ in wider clinical trials as soon as possible, Sun Yanrong, deputy head of the China National Center for Biotechnology Development under the Ministry of Science and Technology (MOST), said at a press conference.

Chloroquine Phosphate, which has been used for more than 70 years, was selected from tens of thousands of existing drugs after _________ rounds of screening, Sun said. According to her, the drug has been under clinical trials in over 10 hospitals in Beijing, ___________ in south Guangdong Province and central China's Hunan Province, and has shown _______ good efficacy.

In the trials, the groups of patients who had taken the drug have shown better indicators than their parallel groups, in abatement(减轻) of fever, improvement of CT images of lungs, the percentage of patients who became _________ in viral nucleic acid tests and the time they need to do so, she said. Patients taking the drug also take a shorter time to recover, she added.

Sun gave an example of a 54-year-old patient in Beijing, who was _________ to hospital four days after showing symptoms. After taking the drug for a week, he saw all indicators　 __________ and the nucleic acid turn negative.

_________, no obvious serious adverse reactions related to the drug have been found among the over 100 patients enrolled in the clinical trials, she said.

On February 15, several departments including the MOST, the National Health Commission and the National Medical Products Administration called a video conference to _________ drug research and clinical experts’ opinions on the drug’s efficacy on COVID-19.

The expert team, led by Zhong Nanshan, a __________ respiratory specialist and an academician of the Chinese Academy of Engineering, agreed that Chloroquine Phosphate can be used to treat more COVID-19 patients, Sun said.

Previous in vitro (体外的) experiments showed that it can block virus _________ by changing the acidity and basicity value inside the cell and interfering receptors of SARS coronavirus. It also shows immune-modulating (调节) activity, which may __________ its antiviral effect in vivo (体内的) and is widely _________ in the whole body, including the lungs, after oral administration.

1.A.advocated B.assumed C.confirmed D.conserved

2.A.limited B.curative C.side D.potential

3.A.applied B.diagnosed C.recognized D.adapted

4.A.feasible B.reasonable C.authentic D.multiple

5.A.for instance B.as well as C.that is to say D.such as

6.A.unintentionally B.considerately C.scarcely D.fairly

7.A.negative B.neutral C.obvious D.positive

8.A.overlooked B.admitted C.accessed D.refused

9.A.promote B.flaw C.fail D.improve

10.A.In the meantime B.By contrast C.So far D.In consequence

11.A.turn down B.listen to C.engage in D.argue about

12.A.respectful B.conventional C.spiritual D.distinguished

13.A.invasion B.investigations C.infections D.cultivation

14.A.undermine B.enhance C.impose D.withhold

15.A.distributed B.reflected C.extinguished D.substituted

高二英语完形填空中等难度题查看答案及解析

Health experts have discovered that adding low-calorie vegetable soup to the start of a meal can actually help to lose weight.

Because you feel full sooner, you eat less of your main course.

The soup regime（养生法）was tested by researchers at Pennsylvania State University, led by Dr Barbara Rolls.

They found that when people ate a first course of soup before lunch they reduced their total calorie intake by 20 per cent, compared with those who did not begin the meal with soup.

But those who favor creamy soups should be careful．Researchers stressed the soup must be low-calorie and based on stock（菜汤）, not cream.

All of the soups tested in the study were made from identical ingredients - chicken stock , broccoli（硬花甘蓝）, potato, cauliflower（菜花）and carrots.

They were mixed together to create four different textures and thickness from separate stock and vegetables through to pureed soup.

Scientists thought that thick soups with chunks of vegetables which required chewing might be more filling, but to their surprise they found all forms had the same effect.

The findings were presented to the Experimental Biology conference in Washington, DC, and the research was part-funded by the National Institutes of Health.

1. What’s the reason that adding low-calorie vegetable soup to the start of a meal can actually help to lose weight?

A. You can take in large quantities of vegetables.

B. You can absorb high calories from the soup.

C. You can take in low calories from the soup.

D. You can feel full soon after having the soup.

2. Which of the following can not be in the low-calorie soup?

A. chicken stock   B. cauliflower   C. cream           D. carrots

3. What is the best title of this passage?

A. Vegetable Soup Helps to Lose Weight．

B. A Scientific Research is Carrying out.

C. A Research Done at Pennsylvania State University

D. Findings Carried out to the Experimental Biology.

4. The underlined word “favor” is the same in meaning with ______.

A. hate            B. enjoy         C. prefer          D. drink.

高二英语阅读理解中等难度题查看答案及解析

Sea turtles are one of several species that have temperature-dependent sex determination. The number of female babies increases when nests are made in warmer sands.

A recent study by the National Oceanic and Atmospheric Administration, California State University and Worldwide Fund for Nature Australia examined two genetically distinct populations of green sea turtles living in the Great Barrier Reef. The study found that a group of about 200,000 turtles living in the northern part of the reef was almost entirely female.

While the southern population was 65 to 69 percent female, females in the northern group accounted for 99.1 percent of young turtles and 86.8 percent of adults.

After combining their results with temperature data, the scientists in charge of the study found that the northern green turtles have been producing mainly females for more than two decades and that the complete feminization(雌性化) of this population is possible in the near future.

The temperature at which the turtles will produce male or female babies can be passed on to the turtles' children. Most sea turtle populations are now producing offspring above the most suitable temperature, making it clear that climate change causes a serious threat to the survival of these populations.

The chief executive Of World Wildlife Fund Australia, Dermot O'Gorman, said this is another sign of the impact of climate change, following recent research that shows that coral bleaching (珊瑚白化) events are occurring far more frequently than in the past.

“We've had two years where we've had mass bleaching events on the Great Barrier Reef,” he told Guardian Australia. “That's a very visible sign of the impact of climate change. But this is a quiet change. We can't see the impact it's having on a turtle population until a study like this shows some long-term trends.”

The lead author of the paper, Dr Michael Jensen, said the findings represent a major environmental conservation issue.

O'Gorman said more urgent action on climate change is clearly needed, adding that some conservationists have already taken practical measures, such as using shade cloth on turtle nesting beaches to lower the sand temperature, and reducing bycatch(误捕) in the fishing industry.

"Shade cloth can be used in certain places, but there's a limit to the scale you can do that, " he said. "Now every large male who can reproduce is going to be even more important.

1.According to the research on Great Barrier Reef's green sea turtles, __________.

A.about 65 to 69 percent of northern turtles are female

B.86.8 percent of southern turtles have grown up to adults

C.the feminization of green sea turtles could become worse

D.adult green Sea turtles can change their sex in warmer places

2.Why did O'Gorman mention coral bleaching?

A.To suggest that climate change poses more risks to coral than turtles.

B.To compare the living environments of turtles and coral.

C.To urge people to take practical measures to fight climate change.

D.To stress this discovery about green sea turtles is very valuable.

3.Conservationists are taking action to __________.

A.keep the sea turtles' nests cool

B.stop the illegal fishing of green sea turtles

C.expand the size of the green sea turtles' nesting places

D.build special nests for turtles to produce offspring

4.Which would be the best title for the article?

A.How climate change affects ocean creatures

B.Invisible change caused by global warming exposed

C.Necessity of protecting green sea turtles and their habitat

D.Global green sea turtle populations in greater danger

高二英语阅读理解中等难度题查看答案及解析

Scientists have learned a lot about the kinds of food people need. They say that there are several kinds of food that people should eat every day. They are: (1) green and yellow vegetables of all kinds; (2) citrus（柑橘）fruits and tomatoes; (3) potatoes and other fruit and vegetables; (4) meat of all kinds, fish and eggs; (5) milk and foods made from milk; (6) bread or cereals（谷类食品）, and rice is also in this kind of food; (7) butter, or something like butter.

Paragraph 2

People in different countries and different places of the world eat different kinds of things. Foods are cooked and eaten in many different kinds of ways. People in different countries eat at different times of the day. In some places people eat once or twice a day; in other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesn’t matter whether foods are eaten raw or cooked, canned or frozen. It doesn’t matter if a person eats dinner at 4 o’clock in the afternoon or at eleven o’clock at night. The important thing is what you eat every day.

Paragraph 3

There are two problems, then, in feeding the large number of people on earth. The first is to find some ways to feed the world’s population so that no one is hungry. The second is to make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.

1. It is important for people to eat ________.

A. three times a day

B. dinner at twelve o’clock

C. cooked food all the day

D. something from each of the seven kinds of food every day

2. People in different countries and different places of the world ________.

A. have the right kinds of food to eat

B. cook their food in the same way

C. have their meals at the same time

D. eat food in different ways

3.Which of the following is NOT true?

A. People in some places don’t have enough to eat.

B. There are too many people in the world.

C. One of the problems is that no one is hungry.

D. The scientists are trying to make people grow to be strong and healthy.

4. If there is Paragraph 4, what do you think is going to be talked about?

A. When people eat their lunch.

B. What to do with the two problems.

C. How to cook food in different ways.

D. Why people eat different kinds of food.

高二英语阅读理解中等难度题查看答案及解析

Several of the off-shore islands are ______ , now that we have a motor boat.

高二英语单项填空简单题查看答案及解析

_______ President Xi has pointed out, we chinese should have our chinese dreams.

A．Which            B．That              C．As               D．It

高二英语单项填空中等难度题查看答案及解析

_________ has already been pointed out, grammar is not a set of dead rules.

高二英语单项填空简单题查看答案及解析