Experts insist that packets of cigarettes com...

Experts insist that packets of cigarettes come with a health warning ______ to them.

A. be attached         B. attach         C. attached    　　 D. attaching

高三英语单项填空中等难度题查看答案及解析

Experts insist that packets of cigarettes come with a health warning ______ to them.

A. be attached         B. attach                C. attached        　　 D. attaching

高三英语单项填空中等难度题查看答案及解析

In many countries packets of cigarettes come with a government health warning ________ to them.

高三英语单项填空中等难度题查看答案及解析

The Dangers of Secondhand Smoke

Most people know that cigarette smoking is harmful to their health. Scientific research shows that it causes many kinds of diseases. 　　 1.　　 However, Edward Gilson has lung cancer, and he has never smoked cigarettes. He lives with his wife, Evelyn, who has smoked about a pack of cigarettes a day throughout their marriage. The Gilsons have been married for 35 years.

No one knows for sure why Mr. Gilson has lung cancer. However, doctors believe that secondhand smoke may cause lung cancer in people who do not smoke because nonsmokers often breathe in the smoke from other people’s cigarettes.　 _2.　　 The US Environmental Protection Agency reports that about 53, 000 people die in the United States each year as a result of exposure to secondhand smoke.

The smoke that comes from a lit cigarette contains many different poisonous chemicals. In the past, scientists did not think that these chemicals could harm a nonsmoker’s health.　 　　 3.　　 They discovered that even nonsmokers had unhealthy amounts of these toxic (有毒的) chemicals in their bodies. 　　 4.　　 For example, we cannot avoid secondhand smoke in restaurants, hotels and other public places. Even though many public places have nonsmoking areas, smoke flows in from the areas where smoking is permitted. It is even harder for children to avoid secondhand smoke. In the United States, nine million children under the age of five live in homes with at least one smoker.

Research shows that children who are exposed to secondhand smoke are sick more often than children who live in homes where no one smokes and that the children of smokers are more than twice as likely to develop lung cancer when they are adults as the children of nonsmokers. The risk is even higher for children who live in homes where both parents smoke.

5. 　 As a result, they have passed laws which prohibit people from smoking in many public places.

A. Recently, though, scientists changed their opinion after they studied a large group of nonsmokers.

B. As a matter of fact, almost all of US breathe tobacco smoke at times, whether we realize it or not.

C. In fact, many people who smoke get lung cancer.

D. However, secondhand smoke is dangerous to all people, old or young.

E. People are becoming very aware of the dangers of secondhand smoke.

F. This smoke is called secondhand smoke.

G. Many people, including doctors, parents, teachers, and others, are concerned about the health risks of cigarette smoking.

高三英语其他题中等难度题查看答案及解析

Although there seemed some signs of recovering, experts said that few, _____, could come back to normal after getting this disease.

A. if any        B. if ever  C. if not    D. if so

高三英语单项填空简单题查看答案及解析

While it's no surprise that heavy drinking comes with health consequences, women in particular are more likely to suffer from alcohol—including an increased risk of alcohol-related death, according to a new study.

The study, published in the journal Alcoholism: Clinical and Experimental Research, looked at the death data of Americans 16 and older from 1999 to 2017. The researchers found nearly 1 million alcohol-related deaths in that time period and the largest annual increase of alcohol-related deaths occurred among Non-Hispanic white women.

"Historically, the most protective factor for women was that it was less common for women to drink a lot," Keith Humphreys, a professor of Stanford University tells Yahoo Lifestyle. "That was changed largely by alcohol companies. Women were targeted in advertising and it worked—and now women drink much more and now they're dying much more. ”

Excessive alcohol use can lead to several health problems over time—and women are particularly affected. "The risk of cirrhosis（肝硬化）and other alcohol-related liver diseases is higher for women than for men," according to the CDC. Drinking too much alcohol can also affect the brain, causing shrinkage（收缩）and memory loss. Research suggests that women are weaker than men to the brain damaging effects of alcohol abuse, and the damage tends to appear with shorter periods of excessive drinking for women than for men. Heavy drinking also influences heart health. The CDC states that studies show women who drink excessively have a higher risk of damaging the heart muscle than men, even for women drinking at lower levels.

The health consequences of drinking also develop more rapidly in women than in men. "You'll commonly see a woman who hasn't been drinking alcohol as long as men and the physical punishment comes faster,” says Humphreys.

1.How was the study done?

A.By doing experiments. B.By comparing data.

C.By watching closely. D.By asking and recording.

2.What's the main idea of Paragraph 3?

A.It explains the reasons for women to drink.

B.It compares the past and present of women.

C.It shows the newest finding about women drinking.

D.It comments on the terrible results of women drinking.

3.How many body parts of women may be damaged by excessive drinking?

A.Two. B.Three.

C.Four. D.Five.

4.What might be the best title for the passage?

A.Women, Suffer More from Drinking B.Drinking, Fashionable but Harmful

C.Drinking Does Harm to Health D.Men and Women, Drink Less

高三英语阅读理解中等难度题查看答案及解析

In cooperation with German experts, Several scientists from the University of Bradford believe that they finally solved a mystery that has been confusing millions of people: why our hair turns gray with age.

The researchers came up with their results by examining native hair and cells from human hair follicles（毛囊）. They say the secret turns out to be hidden in catalase（过氧化氢酶）, which is causing hair to turn gray.

Catalase production goes down with age and stress, allowing hydrogen peroxide（过氧化氢） in the hair to do its favorite job—making hair gray, and then white, by blocking the normal production of melanin（黑色素）. Melanin is our hair's natural pigment that is responsible for the color of hair. It also determines the color of our eyes and skin.

Dr. Gerald Weizmann, an editor of a journal, says," All of our hair cells make a tiny bit of hydrogen peroxide, but as we get older, this little bit becomes quite a lot, and our hair turns gray and then white."

The new study brings hope for millions of people who have to color their hair: to finally obtain some shampoo that will decrease levels of hydrogen peroxide and therefore restore gray or white hair to its natural color or even prevent it from turning gray.

The researchers are already conducting an experiment with such a drug on a few volunteers with gray hair and expect to get the results in the next two to three months. If everything works out, millions of people will choose between this drug and other previously used expensive dyes. However, even if the drug works, it will take at least several years before it can be brought to the market.

1.What is the passage mainly about?

A. The effect that gray hair has on people.

B. The chemical elements of people's hair.

C. The reason why people's hair turns gray.

D. New drugs to prevent people's hair from turning gray.

2.According to the passage, people's hair turns gray because of______.

A. a decrease in catalase　　 B. the death of hair cells

C. the production of melanin　　 D. a decrease in hydrogen peroxide

3.Which of the following statements is TRUE according to the passage?

A. The new study shows it's harmful to color our hair with dyes.

B. Dr. Gerald Weizmann is in charge of the new drug experiment.

C. Our hair cells make lots of hydrogen peroxide when we are young.

D. We may restore our gray or white hair to its natural color with shampoo.

4.What can we learn from the last paragraph?

A. Only a small number of people can use the new drug.

B. Most of the volunteers in the experiment are old people.

C. The drug cannot be brought to the market soon even if it works.

D. The researchers have already known the results of the experiment.

高三英语阅读理解困难题查看答案及解析

Experts suggest that young parents ______ some time to communicate with their children instead of spending much time playing games on the phone.

A.set out B.put away C.make up D.account for

高三英语单项填空中等难度题查看答案及解析

Experts suggest that young parents ______ some time to communicate with their children instead of spending much time playing games on the phone.

A. set aside　　 B. put away

C. make up　　 D. account for

高三英语单项填空简单题查看答案及解析

Kids in the Kitchen

Some experts serve up some of the factors that make cooking with kids a pleasure rather than a struggle．

1.________．

For obvious reasons, a grown-up needs to be in charge of the stove, sharp knives and electrical equipment．Dr．Colker advises parents to be watchful, even when their kids are involved in relatively safe tasks．The bottom line is to stay close by, and teach your kids to respect basic safety rules．

Leave Time

2.________When kids help, you’ll need extra time to teach them some skills．When you're in a hurry, give your kids tasks that don't require much guidance．As they get older and develop more skills, they will become wonderful helpers and even save your time!

Go for Variety

Our experts agree that children can enjoy more than the usual "kid food", such as chicken nuggets and pizza．3.________Sandra K. Nissenberg suggests exploring the produce passage in the supermarket and talking about the unusual fruits and vegetables you find．

Involve Kids in Clean-up and Table-setting

Dr．Laura Colker reminds parents that preschoolers are eager to deal with grown-up tasks．They actually "enjoy the clean-up and table-setting activities", she says．4.

They may also enjoy setting the table and counting the spoons．

Make Cooking a Learning Adventure

Cooking helps kids develop a healthy interest in the lifelong challenge of eating nourishing （有营养的） , delicious meals．Kids learn about science when they heat or cool a mixture and observe how it changes．________5.________And as they wait for the timer to ring, they develop a better understanding of the concept of time．

A．Most young children can easily handle simple kitchen equipment．

B．Cooking with young children requires patience．

C．Measuring ingredients teaches kids about fractions （分数）．

D．Kids can and should help wash and dry the pots and pans．

E．Keep an Eye on Safety

F．Stay Equipped

G．To introduce new foods, involve your kids in menu planning and shopping.

高三英语填空题中等难度题查看答案及解析