--- Have you heard about the sinking of the S...

--- Have you heard about the sinking of the South Korean Ship ?

--- Sure, it _______ the only thing on the news for the past three weeks.

A. has been　　　　　 B. is

C. would be　　　　　 D. had been

高三英语单项填空中等难度题查看答案及解析

Have you ever heard a news reporter talk about DNA? Reporters talk about DNA found at the scene of a crime. They talk about police finding DNA “fingerprints.” Police sometimes use DNA as a clue to find out who committed the crime.

DNA is a substance（物质） that makes up genes. Everything alive has genes. Plans have genes. Animals have genes. You have genes.

Genes are the basic units of heredity（遗传）. Heredity means all the characteristics you inherit from your parents. You get your genes from your parents. You inherit half of your genes from your mother. You inherit half of your genes from your father.

Genes are a kind of code. A tree’s genes tell what shape its leaves will be. A cat’s genes tell what color its fur will be. Your genes tell what color your eyes will be. Your genes tell what color your hair will be. Everything about you comes from the code in your genes.

Genes line up on strands（链） called chromosomes（染色体） in cells. Everything alive is made up of cells. Chromosomes are in the center, or nucleus, of cells.

Different parts of you are made of different kinds of cells. Your muscles are made of muscle celIs. Your skin is made of skin cells. The code in your genes tells your body to make different kinds of cells. The genes in each cell tell the cell how to work. They tell the cell when to make new copies of itself.

An Austrian monk named Gregor Mendel first saw inherited patterns in pea plants. He experimented with pea plants in the 1860s. One of the things, or traits（特质）， Mendel studied was what makes some pea plants tall and some short. He said that the traits must come from units of heredity passed from the parent plants. These units were later called genes.

In the mid-1900s, scientists discovered that genes are made of DNA. In the 1970s, scientists learned how to change DNA with genetic engineering. Scientists also learned that problems with certain genes cause diseases. Muscular dystrophy, cystic fibrosis, and hemophilia are some genetic diseases-diseases caused by problems in genes. Today, scientists are looking for ways to cure genetic diseases by changing genes through a process called gene therapy.

1. What is DNA?

A. DNA is a kind of gene.

B.. DNA is a substance that makes up genes.

C. DNA is the basic unit of heredity.

D. DNA is a measure to protect crime.

2. Which of the following about genes is correct according to the passage?

A. Plants, animals and human beings have the same genes.

B. Half people inherit all genes from their mother, others from their father.

C. Genes decide the trees shapes, the cats’ fur color and our eyes’ color as well.

D. Genes will give you a code when you need them.

3.Where are genes?

A. Genes lining up on strands called chromosomes are in the center of cells.

B. Genes hide in everything alive in your body.

C. Genes can be nowhere but in your mind, controlling all your actions.

D. Genes travel in your body and help cope skin, muscle, and eyes.

4.An Austrian monk named Gregor Mendel ________.

A. first saw inherited patterns in people

B. was interested in why plants were different

C. first called the units of heredity from parents genes

D. was the first who discovered genes

5. We can conclude that ________.

A. scientists were less intelligent than monks in 1900s

B. some genes are bad and can cause diseases

C. we don’t need to worry about genetic diseases any longer

D. the discovery of genes may be of great help in our daily life

高三英语阅读理解中等难度题查看答案及解析

You may have heard about the many benefits of yoga, but a recent New York Times story, has stirred up more than a little controversy in the yoga community.

"How Yoga Can Wreck Your Body," by science writer William J. Broad, quotes a long-time yoga teacher who "...has come to believe that 'the vast majority of people' should give up yoga altogether. It's simply too likely to cause harm." He goes on to describe a number of cases where people have been injured doing yoga, including himself.

The research in the article isn't groundbreaking: doing any form of exercise you could potentially hurt yourself. If you look at the injury rates of other physical activities, the number of injuries sustained from yoga would pale in comparison.

Practicing yoga is just like anything in life: You have to push yourself in order to grow. But you also have to know your limits and when you're breaking them. If you stick to your comfort zone, you'll never be able to increase your flexibility. If you push to the point where you're not only uncomfortable, but in real pain, you'll likely injure yourself.

The reasons that yoga causes "serious injury”, according to the Times story, range from students' physical weaknesses to inexperienced teachers pushing too hard to the growing number of inflexible "urbanites who sit in chairs all day" trying hard to twist themselves into difficult postures.

Yoga is called a "practice" for a reason. You don't have to be perfect. You don't have to tackle every pose. It doesn't matter if you can touch the floor with your palms during your first forward bend or your thousandth, or if you never get there.

We go to the mat to learn to better listen to what our bodies are telling us, and to better hear that quiet inner voice drowned out by the noise of our busy lives. It's a shame to discourage the majority of people from practicing yoga and missing out on all of the mind-body benefits that going to the mat has to offer.

1.The underlined word is best replaced by __.

A. Injure    B. Benefit    C. Push   D. Shape

2.What does author mainly want to tell us in the 3rd paragraph?

A. All physical activities are equally harmful.

B. Yoga causes much less injuries than other physical activities.

C. Similar researches have been done before.

D. Yoga, like any other form of exercise, can hurt people.

3.Which is not mentioned among the reasons for yoga being likely to cause injury?

A. Teachers lack the knowledge of students’ limits.

B. Modern lifestyle decreases our flexibility.

C. The body doesn’t tell when you are in real pain.

D. Students themselves might not be in good physical condition.

4.What is the author’s attitude towards practicing yoga?

A. It’s a shame not to practice yoga.

B. One should push the limits in order to be perfect.

C. The majority should give up yoga for it may cause harm.

D. One should enjoy the physical and mental benefit that yoga brings.

高三英语阅读理解中等难度题查看答案及解析

—Have you heard about the plan to sell the company?

—Not at all. I am totally__________

A.out of the blue B.in the dark C.not all there D.up in the air

高三英语单项填空中等难度题查看答案及解析

Have you ever heard of the trees that are homes animals both on land and sea?

A. about　　　　　　　 　 B. to

C. with　　　　　　　　　　 D. over

高三英语单项填空中等难度题查看答案及解析

Have you ever heard of the trees that are homes　　　　　 animals both on land and sea?

A. about　　　　　　　　 B. to　　　　　　　　　 C. with　　　　　　　　　　 D. over

高三英语单项填空中等难度题查看答案及解析

When I heard about the marriage of Andy Lau, you could have knocked me down with a _______ .

A．stone            B．hammer           C．feather           D．knife

高三英语单项填空简单题查看答案及解析

— What kind of food would you like to have?

— ____ but Japanese.

— How about Korean, then?

高三英语单项填空简单题查看答案及解析

People have grown taller over the last century, with South Korean women shooting up by more than 20cm on average, and Iranian men gaining 16.5cm. A global study looked at the average height of 18-year-olds in 200 countries between 1914 and 2014.

The results reveal that while Swedes were the tallest people in the world in 1914, Dutch men have risen from 12th place to the top with an average height of 182.5cm. Latvian women, meanwhile, rose from 28th place in 1914 to become the tallest in the world a century later, with an average height of 169.8cm.

James Bentham, a co-author of the research from Imperial College, London, says the global trend is likely to be due primarily to improvements in nutrition and healthcare. “An individual's genetics has a big influence on their height, but once you average over whole populations, genetics plays a less key role,” he added.

A little extra height brings a number of advantages, says Elio Riboli of Imperial College. “Being taller is associated with longer life expectancy,” he said. “This is largely due to a lower risk of dying of cardiovascular disease among taller people.”

But while height has increased around the world, the trend in many countries of north and sub-Saharan Africa causes concern, says Riboli. While height increased in Uganda and Niger during the early 20th century, the trend has turned backwards in recent years, with height decreasing among 18-year-olds.

“One reason for these decreases in height is the economic situation in the 1980s,” said Alexander Moradi of the University of Sussex. The nutritional and health crises that followed the policy of structural adjustment, he says, led to many children and teenagers failing to reach their full potential in terms of height.

Bentham believes the global trend of increasing height has important implications. “How tall we are now is strongly influenced by the environment we grew up in,” he said. “If we give children the best possible start in life now, they will be healthier and more productive for decades to come.”

1.What does the global study tell us about people's height in the last hundred years?

A.There is a remarkable difference across continents.

B.There has been a marked increase in most countries.

C.The increase in people's height has been quickening.

D.The increase in women's height is bigger than in men's.

2.What does James Bentham say about genetics in the increase of people's height?

A.It counts less than generally thought.

B.It outweighs nutrition and healthcare.

C.It impacts more on an individual than on a population.

D.It plays a more significant role in females than in males.

3.What does Elio Riboli say about taller people?

A.They tend to live longer. B.They enjoy an easier life.

C.They generally risk fewer fatal diseases. D.They have greater expectations in life.

4.What do we learn about 18-year-olds in Uganda and Niger?

A.They grow up slower than their peers in other countries.

B.They are actually shorter than their earlier generations.

C.They find it hard to bring their potential into full play.

D.They have experienced many changes of government.

5.What does James Bentham suggest we do?

A.Watch closely the global trend in children's development.

B.Make sure that our children grow up to their full height.

C.Try every means to protect our environment.

D.Ensure our children grow up in a more ideal environment.

高三英语阅读理解中等难度题查看答案及解析

Thanks to　　　 drama currently on air, Man From the Stars, South Korean TV dramas have attracted　 wider audience.

A. the; the    　　 B. a；a     　　　 C.　 a; the　　　　　     D.　 a; /

高三英语单项填空中等难度题查看答案及解析