A recent study has shown that eating a small amount of dark chocolate every day could be good for your health. Scientists have found that a regular 2 ounces can help lower blood pressure and reduce the risk of having a heart attack or stroke（中风）without any weight gain. But take care before you reach for a large bar. The effects are canceled out if more than 30 calories are taken into your body each day, the researchers warn.
It’s already known that a chemical called polyphenol（多酚）, found in chocolate, can help reduce blood pressure, and blood pressure lowered in this way can reduce the risk of death from a stroke by 8 percent and from a heart attack by 5 percent, scientists declare. And it can also reduce the risk or death in general by 4 percent.
A daily diet with a little chocolate has the same effect with some special diets designed to lower blood pressure, according to one researcher. “Although all the degree of the blood pressure reduction is small, the effects are quite obvious,” the researchers said.
However, Sara Stanner, a nutritionist at the British Heart Foundation, is quite cautious. “This study suggests that small quantities of small chocolate might have good effects on blood pressure. However, it is important to remember that chocolate is also high in fat and calories. So eating much is not good for your heart.” “Polyphenols are also found in fruits and vegetables, which can be taken in without the risks associated with overintake,” she added.
But the German study shows that the fat content does not cancel out the good effects—at least where small amounts are concerned.
1.How is Paragraph 2 developed?
A. By making comparisons. B. By listing figures.
C. By analyzing causes. D. By giving examples.
2.What health benefits does dark chocolate have?
A. It lowers blood pressure heavily.
B. It may prevent heart attacks in a way.
C. It’s useful for controlling one’s weight.
D. It helps people strengthen their body.
3.What do Sara Stanner’s words suggest?
A. Eating chocolate has no health benefits.
B. Dark chocolate is not so nutritious as expected.
C. The findings of scientist’s study are not scientific.
D. Eating fruits and vegetables may be a better choice.
4.What will be discussed in the following passage?
A. Some details of the German study.
B. Benefits of fruits and vegetables.
C. Harm of overeating dark chocolate.
D. The proper amount of dark chocolate taken in.
高二英语阅读理解中等难度题
A recent study has shown that eating a small amount of dark chocolate every day could be good for your health. Scientists have found that a regular 2 ounces can help lower blood pressure and reduce the risk of having a heart attack or stroke（中风）without any weight gain. But take care before you reach for a large bar. The effects are canceled out if more than 30 calories are taken into your body each day, the researchers warn.
It’s already known that a chemical called polyphenol（多酚）, found in chocolate, can help reduce blood pressure, and blood pressure lowered in this way can reduce the risk of death from a stroke by 8 percent and from a heart attack by 5 percent, scientists declare. And it can also reduce the risk or death in general by 4 percent.
A daily diet with a little chocolate has the same effect with some special diets designed to lower blood pressure, according to one researcher. “Although all the degree of the blood pressure reduction is small, the effects are quite obvious,” the researchers said.
However, Sara Stanner, a nutritionist at the British Heart Foundation, is quite cautious. “This study suggests that small quantities of small chocolate might have good effects on blood pressure. However, it is important to remember that chocolate is also high in fat and calories. So eating much is not good for your heart.” “Polyphenols are also found in fruits and vegetables, which can be taken in without the risks associated with overintake,” she added.
But the German study shows that the fat content does not cancel out the good effects—at least where small amounts are concerned.
1.How is Paragraph 2 developed?
A. By making comparisons. B. By listing figures.
C. By analyzing causes. D. By giving examples.
2.What health benefits does dark chocolate have?
A. It lowers blood pressure heavily.
B. It may prevent heart attacks in a way.
C. It’s useful for controlling one’s weight.
D. It helps people strengthen their body.
3.What do Sara Stanner’s words suggest?
A. Eating chocolate has no health benefits.
B. Dark chocolate is not so nutritious as expected.
C. The findings of scientist’s study are not scientific.
D. Eating fruits and vegetables may be a better choice.
4.What will be discussed in the following passage?
A. Some details of the German study.
B. Benefits of fruits and vegetables.
C. Harm of overeating dark chocolate.
D. The proper amount of dark chocolate taken in.
高二英语阅读理解中等难度题查看答案及解析
The recent study has shown that people’s attitudes towards protecting the environment aren’t _________with their behavior in daily life.
A. reliable B. consistent
C. positive D. cautious
高二英语单项填空简单题查看答案及解析
Recently a new US study has shown that couples who expect their children to help care for them in old age should hope they have daughters because they are likely to be twice as attentive overall.
The research by Angelina Grigoryeva, a sociologist at Princeton University, found that, while women provide as much care for their elderly parents as they can manage, men do as little as they can get away with and often leave it to female family members.
Using data from the University of Michigan Health and Retirement Study, a study which has been tracking a cross-section of over-50s for the last decade, she calculated that women provide an average of 12.3 hours a month of care for elderly parents while men offer only 5.6 hours.
“Whereas the amount of elderly parent care daughters provide is associated with limitations they face, such as employment or childcare, sons’ caregiving is connected only with the presence or absence of other helpers, such as sisters or a parent's spouse （配偶）,” she explained.
“Sons reduce their relative caregiving efforts when they have a sister, while daughters increase theirs when they have a brother.”
“This suggests that sons pass on parent caregiving responsibilities to their sisters.”
In the UK, the 2011 census （人口普查）showed that there are now around 6.5 million people with caring responsibilities — a figure which has risen by a tenth in a decade.
But many are doing so at the risk of their own health. The census showed that those who provide 50 hours or more of care a week while trying to hold down a full-time job are three times more likely to be struggling with ill health than their working counterparts （相对应的人）who are not careers.
1.What does the underlined phrase “is associated with” in Paragraph 4 mean?
A.is faced with B.is related to
C.is filled with D.is fond of
2.According to the study we know that .
A.American couples are preferring daughters to sons a lot
B.sons are twice likely as daughters to care for parents in old age
C.having a brother makes women do their share less
D.men tend to take less care of their parents than women
3.Which of the following statements is true?
A.The number of people providing care has increased by 6.5 million.
B.More people have left behind their work to look after the elderly.
C.Many people who both work and care others can be threatened by health problems.
D.People shouldn't take much responsibility to care for the old.
4.What's the attitude of the author in the article?
A.Positive. B.Subjective.
C.Objective. D.Negative.
高二英语阅读理解中等难度题查看答案及解析
Four habits of happy people
While the recent research has shown that about 60 percent of our baseline (基本) level of happiness is probably genetically determined, it means 40 percent is under our control. You can’t go back and get new genes.1.. Here are the good habits of happy people.
·Spend time outside. If you can clock 20 minutes a day outside, studies show you’ll not only maintain a better mood, but your mind will be more open and you’ll improve your working memory. 2..
·Exercise regularly. All exercise releases endorphins (脑内肽) in your brain, and if you work out regularly, this mood boosts（增强）even carries over to non-workout days.3.. Mood stays about the same on days they don’t.
4.. A study has confirmed that when people actively try to be happy, they raise their baseline moods, making them feel happier than those who do not try. In the study, two sets of participants listened to “happy” music. Those who actively tried to feel happier reported the highest level of positive mood afterwards.
·Care for others. 5.. Volunteer work is good for both mental and physical health. People of all ages who volunteer are happier and experience better physical health and less depression.
A. Exercise is easy to do.
B. Put effort into being happy.
C. People around you impact your mood.
D. Sunshine and fresh air make you feel good too.
E. But you can start a good morning over with a new attitude.
F. People who spend time every month helping others are happier.
G. On exercise days, people’s mood is significantly improved after exercising.
高二英语七选五中等难度题查看答案及解析
A recent study of ancient and modern elephants has come up with the unexpected conclusion that the African elephant is divided into two distinct (不同的) species
The discovery was made by researchers at York and Harvard universities when they were examining the genetic relationship between the ancient woolly mammoth and mastodon to modern elephants—the Asian elephant, African forest elephant and African savanna elephant
Once they obtained DNA sequences (序列) from two fossils (化石)，mammoths and mastodons the team compared them with DNA from modern elephants. They found to their amazement that modern forest and savanna elephants are as distinct from each other as Asian elephants and mammoths.
The scientists used detailed genetic analysis to prove that the African savanna elephants and the African forest elephants have been distinct species for several million years. The divergence of the two species took place around the time of the divergence of Asian elephants and woolly mammoths. This result amazed all the scientists.
There has long been debate in the scientific community that the two might be separate species but this is the most convincing scientific evidence so far that they are indeed different species.
Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species despite the elephants’ significant size differences. The savanna elephant has an average shoulder height of 3.5metres while the forest elephant has an average shoulder height of 2.5metres. The savanna elephant weighs between six and seven tons, roughly double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However, the proof lay in the analysis of the DNA.
Alfred Roca, assistant professor in the department of Animal Sciences at the University of Minois, said, “We now have to treat the forest and savanna elephants as two different units for conservation purpose. Since 1950 all African elephants have been conserved as one species. Now that we know the forest and savanna elephants are two very distinct animals, the forest elephant should become a bigger priority (优先)for conservation purpose .”
1.One of the fossils studied by the researchers is that of ________.
A. the Asian elephant B. the forest elephant
C. the savanna elephant D. the mastodon elephant
2.The underlined word “divergence” in paragraph 4means “________”
A. evolution B. exhibition C. separation D. examination
3.The researcher’s conclusion was based on a study of the African elephant’s ____________
A. DNA B. height C. weight D. population
4.What were Alfred Roca’s words mainly about?
A. The conversation of African elephants.
B. The purpose of studying African elephants
C. The way to divide African elephants into two units
D. The reason for the distinction of African elephants
5.Which of the following can be the best title for the passage?
A. Naturalist’s Belief about Elephants.
B. Amazing Experiment about Elephants
C. An Unexpected Finding about Elephants
D. A Long scientific Debate about Elephants
高二英语阅读理解中等难度题查看答案及解析
A recent study of ancient and modern elephants has come up with the unexpected conclusion that the African elephant is divided into two distinct(不同的) species.
The discovery was made by researchers at York and Harvard Universities when they were examining the genetic relationship between the ancient woolly mammoth and mastodon to modern elephants — the Asian elephant, African forest elephant, and African savanna elephant.
Once they obtained DNA sequences(序列) from two fossils(化石), mammoths，and mastodons the team compared them with DNA from modern elephants. They found to their amazement that modern forest and savanna elephants are as distinct from each other as Asian elephants and mammoths.
The scientists used detailed genetic analysis to prove that the African savanna elephant and the African forest elephant have been distinct species for several million years. The divergence of the two species took place around the time of the divergence of Asian elephants and woolly mammoths. This result amazed all the scientists. There has long been debate in the scientific community that the two might be separate species, but this is the most convincing scientific evidence so far that they are indeed different species.
Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species, despite the elephants’ significant size differences. The savanna elephant has an average shoulder height of 3.5 metres while the forest elephant has an average shoulder height of 2.5 metres. The savanna elephant weighs between six and seven tons, roughly double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However the proof lay in the analysis of the DNA.
Alfred Roca, assistant professor in the Department of Animal Sciences at the University of Illinois, said, “We now have to treat the forest and savanna elephants as two different units for conservation purposes. Since 1950，all African elephants have been conserved as one species. Now that we know the forest and savanna elephants are two very distinctive animals, the forest elephant should become a bigger priority(优先) for conservation purposes.”
1.One of the fossils studied by the researchers is that of _____.
A. the Asian elephant B. the forest elephant
C. the savanna elephant D. the mastodon elephant
2.The researchers’ conclusion was based on a study of the African elephant’s _____.
A. DNA B. height
C. weight D. population
3.What are Alfred Roca’s words mainly about?
A. The conservation of African elephants.
B. The purpose of studying African elephants.
C. The way to divide African elephants into two units.
D. The reason for the distinction of African elephants.
4.Which of the following can be the best title for the passage?
A. Naturalists’ Beliefs about Elephants
B. Amazing Experiments about Elephants
C. An Unexpected Finding about Elephants
D. A Long Scientific Debate about Elephants
高二英语阅读理解中等难度题查看答案及解析
A survey in the Philippines has shown the country uses a “shocking” amount of single-use plastic, including nearly 60 billion sachets (小袋) a year, a new report said Friday. The report, produced by the non-governmental organization GAIA, is part of an effort to collect data on plastic consumption as environmentalists push for government action to reduce plastic waste.
It contains shocking figures: every day, almost 48 million shopping bags are used throughout the Philippines, adding up to more than 17 billion a year. And that figure does not include the smaller, thinner and often transparent plastic bags known as “labo” bags—around 16.5 billion of those are used per year across the country, the report says. The figures are based on 21 waste assessments conducted in 13 cities across the Philippines, with the national figures produced by extrapolating(推断) from local results.
More than half of non-recyclable plastic analyzed in the survey came from sachets—small plastic packets often lined with aluminium or containing other materials that make them non-recyclable. Small portions of products ranging from coffee to shampoo are often sold in sachets in the Philippines, and are seen as an affordable solution for consumers.
But Grate said the popularity appeared to be more a result of what is available, with wealthier consumers simply buying multiple sachets. “If you go to the supermarkets, it’ s rare for you to be able to buy coffee in bigger containers; it’s all in sachets,” he said.
The survey is the first time an organization has tried to quantify(确定数量) sachet use, and the NGO hopes to pressure both the government and industry to take action on controlling single-use plastic. The report found that where local-level plastic bag bans have been put in place and strictly enforced, usage has dropped dramatically.
It urged the government to “institute a comprehensive national plastic bag ban that promotes reusable bags”. And it wants regulations on other single-use plastic products and rules requiring companies to redesign products and packaging to minimize plastic waste.
1.What’ s the purpose of GAIA in carrying out the survey?
A. To show how shocking the amount of plastic waste can be.
B. To get people and the government know better about its final goal.
C. To collect accurate numbers of plastic bags used in the whole country.
D. To help make the government take measures to reduce plastic waste.
2.Why can’t many sachets be recycled?
A. They are not made of only plastic.
B. They won’ t last long after being buried.
C. They cost less to be made than recycled.
D. They can naturally change to a simpler chemical form.
3. Which is a reason for the popularity of sachets in the Philippines?
A. They can’ t be easily afforded. B. Big containers are rarely available.
C. Shopping bags are often transparent. D. They are more environmentally friendly.
4.How can companies help reduce plastic waste according to GAIA?
A. By producing fewer products.
B. By inventing new recycling machines.
C. By donating money to recycling companies.
D. By using as little plastic as possible on their products.
高二英语阅读理解中等难度题查看答案及解析
The latest study by the University of Florida has found that eating from smaller, less beautiful, and even paper plates will help prevent overeating. Eating with a fork instead of a spoon can help you lose weight, the researchers say. Much to their surprise, they find that putting mirrors in the dining room will also help reduce weight.
The researchers asked 185 college students to choose a chocolate cake or a fruit salad, and evaluated the taste. Those who ate in a room with a mirror scored the taste of junk food much lower than those in a room without a mirror. But the taste of fruit salad remained the same in any case.
Lead scientist, Dr. Ata Jami, says that a glance in the mirror tells people more than just about their physical appearance. It enables them to view themselves objectively and helps them to judge themselves and their behavior in the same way that they judge other people.
The mirrors were found to push people to compare and match their own behavior with accepted social standards. The researchers believe it proves that people don’t want to look in the mirror when they feel they are following the social standards. When they look in the mirror with mouths full of junk food, feelings of discomfort and failure can be increased. Therefore, the presence of the mirror lowers the taste of unhealthy food.
However, researchers say this is only the case if people select the food they are eating, because they are responsible for that choice. The researchers suggest that mirrors be placed in dining rooms and other eating spaces, so that people will start eating more healthily.
1.Researchers are amazed to find that ______.
A. paper plates make food look nicer
B. people using a fork will eat more
C. mirrors can help people lose weight
D. people will eat more in front of a mirror
2.What can be inferred from the study?
A. Some teenagers got involved in it.
B. People were required to eat with a spoon.
C. People preferred a chocolate cake to a fruit salad.
D. The mirror may not affect the taste of healthy food.
3.According to Dr. Ata Jami, the mirror ______.
A. makes people judge others correctly
B. makes people well judge themselves
C. is a necessary part of people’s daily life
D. can only show the appearance of a person
4.How does the mirror affect the taste of junk food?
A. By making people hungry.
B. By showing the social standards.
C. By attracting people to healthy food.
D. By causing a feeling of discomfort.
高二英语阅读理解中等难度题查看答案及解析
The latest study by the University of Florida has found that eating from smaller, less beautiful, and even paper plates will help prevent overeating. Eating with a fork instead of a spoon can help you lose weight, the researchers say. Much to their surprise, they find that putting mirrors in the dining room will also help reduce weight.
The researchers asked 185 college students to choose a chocolate cake or a fruit salad, and evaluated the taste. Those who ate in a room with a mirror scored the taste of junk food much lower than those in a room without a mirror. But the taste of fruit salad remained the same in any case.
Lead scientist, Dr. Ata Jami, says that a glance in the mirror tells people more than just about their physical appearance. It enables them to view themselves objectively (客观地) and helps them to judge themselves and their behavior in the same way that they judge other people.
The mirrors were found to push people to compare and match their own behavior with accepted social standards. The researchers believe it proves that people don’t want to look in the mirror when they feel they are following the social standards. When they look in the mirror with mouths full of junk food, feelings of discomfort and failure can be increased. Therefore, the presence of the mirror lowers the taste of unhealthy food.
However, researchers say this is only the case if people select the food they are eating, because they are responsible for that choice. The researchers suggest that mirrors be placed in dining rooms and other eating spaces, so that people will start eating more healthily.
1.Researchers are amazed to find that ______.
A. paper plates make food look nicer
B. people using a fork will eat more
C. mirrors can help people lose weight
D. people will eat more in front of a mirror
2.What can be inferred from the study?
A. Some teenagers got involved in it.
B. People were required to eat with a spoon.
C. People preferred a chocolate cake to a fruit salad.
D. The mirror may not affect the taste of healthy food.
3.According to Dr. Ata Jami, the mirror ______.
A. makes people judge others correctly
B. makes people well judge themselves
C. is a necessary part of people’s daily life
D. can only show the appearance of a person
4.How does the mirror affect the taste of junk food?
A. By making people hungry.
B. By showing the social standards.
C. By attracting people to healthy food.
D. By causing a feeling of discomfort.
高二英语阅读理解中等难度题查看答案及解析
Recently,people in US education have gotten extremely worried because a new report has shown that American students have a math problem.
The 2015 Program for International Student Assessment（评估）(PISA) shows math scores in the US getting lower and no improvement in science or reading.PISA tests 15-year-olds from different countries and regions in their math,science and reading skills.About 540,000 students from 72 countries and regions took part in the assessment in 2015.
US scores in reading and science were about the same as three years ago,leaving Americans near the middle of the bigger group.But the situation in math is much more worrying.The US average score was 470,be;ow the OECD（经合组织）test average of 490,meaning the US was No.40 among the 72 countries and areas.It was 12 points lower than in 2012 and 18 points lower than in 2009.So,what is going on with American students' math skills?
One reason may be that the US does not teach math in enough depth."Students are often good at answering the first part of a problem in the United States,"said Andreas Schleicher,director of education and skills at OECD."But as soon as students have to go deeper and answer the more complicated part of a problem,they have difficulties."In comparison,many high-performing countries and regions in math teach a lot less but focus in much greater depth, especially when you look at East Asia,Japan and Singapore,according to Schleicher.
Another reason may be the fact that many people in the US are unwilling to travel to foreign countries to learn better teaching practices."One of our biggest challenges in the US is that the teachers are not going out and seeing what high-performing countries do differently,"said Wendy Kopp,who started Teach for America,in a news program.
1.When it comes to the 2015 PISA results,people in US education are more concerned about .
A. the US average score
B. the differences from the previous PISA
C. American students' performance in math
D. American students' situation in science and reading skills
2.What can we learn from the passage?
A. American students are not interested in simple math problems.
B. American students are unwilling to go abroad for further study.
C. American math teachers envy high-performing countries better teaching skills.
D. American math teachers seldom teach students how to solve complicated problems.
3.What is the main purpose of the passage?
A. To inform people of American students' 2015 PISA results.
B. To analyze the causes of American students' problems with math.
C. To stress the importance of learning math well to America students.
D. To give American math teachers some advice on how to teach math.
高二英语阅读理解中等难度题查看答案及解析