题目
题型：不详难度：来源：
A study by a team at Johns Hopkins University in Baltimore, Maryland, involving squirrel monkeys and baboons (狒狒) found that both species suffered permanent damage to key cells, which are lost in Parkinson’s, after receiving three low doses（剂量）of Ecstasy at three-hour periods.
The study is particularly important because baboons are one of the best animal models for the human brain. George Ricaurte, who led the research, said that the widespread abuse of drug might have caused severe damage. “The most troubling result is that young adults using Ecstasy may be increasing their risk of developing Parkinsonism as they get older.”
Alan Leshner, a former director of the US National Institute on Drug Abuse, said, “This study emphasizes the multi-aspect damage that Ecstasy causes to users. We’ve long known that repeated use damages brain cells. But this study shows that even very occasional（偶尔） use can have long-lasting effects on many different brain systems. It sends an important message to young people: don’t experiment with your own brain.”
Janet Betts, a mother whose teenage daughter Leah died after a single Ecstasy tablet in 1995, said, “This comes as no surprise. But people can’t see the effects at first, and they say it won’t happen to them. We’ll see the symptoms later, just as we have with smoking.”
小题1:The article is intended to ______.
| A．explain the bad effects of drugs on people’s health |
| B．warn young people of the risk of taking the drug Ecstasy |
| C．persuade people out of such bad habits as smoking and using drugs |
| D．tell us the links between the drug Ecstasy and the animal models |
| A．can permanently destroy one’s brain cells |
| B．can cause serious brain damage occasionally |
| C．will result in immediate symptoms |
| D．may bring on Parkinson’s at once |
| A．Because these animals usually take drugs. |
| B．Because their brain is similar to human beings. |
| C．Because there is a model in the animals’ brains. |
| D．Because they will soon get well after the experiment. |
| A．Leah’s death after a single tablet |
| B．the symptoms after smoking |
| C．the damage to the brain systems |
| D．repeated use of the drug |
答案
小题1:B
小题1:A
小题1:B
小题1:C
解析
核心考点
试题【A single night of taking the drug Ecstasy (摇头丸) can cause serious brain damage a】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Experts say people around the world wash their hands but very few use soap at so-called critical moments．These include after using the toilet, after cleaning a baby and before touching food．
Global Handwashing Day is the idea of the Public-private Partnership for handwashing with soap．The goal, they say, is to create a culture of handwashing with soap．The organizers say all soaps are equally effective at removing disease-causing germs．They say the correct way to wash is to wet your hands with a small amount of water and cover them with soap．Rub it into all areas, including under the fingernails．Then, wash well under running water．Finally, dry your hands with a clean cloth．
The Partnership says soap is important because it increases the time that people spend washing．Soap also helps to break up the dirt that holds most of the germs．And it usually leaves a pleasant smell, which increases the chances that people will wash again．
It also says that washing hands with soap before eating and after using the toilet could save more lives than any medicine．It could help reduce cases of diarrhea, which is the second leading cause of child deaths, killing more than one and a half million children a year, by almost half．
小题1:What does the author intend to tell us in the passage?
| A．To keep healthy by washing hands． | B．To wash hands with soap． |
| C．To take action to wash hands． | D．To wash hands often． |
a．Washing hands well． b．Covering hands with soap． c．Drying hands．
d．Rubbing hands with soap．e．Wetting hands．
| A．a--c--b--e--d | B．e--d--a--b—c |
| C．a--c--b--d--e | D．e--b--d--a--c |
| A．It gives people a longer handwashing time． |
| B．It helps to remove a lot of germs from hands． |
| C．It attracts people to do more handwashing． |
| D．It gets all people into the habit of washing hands． |
| A．kills half of the kids in the developing countries a year |
| B．causes the greatest number of child deaths |
| C．can be prevented to some degree by washing hands with soap |
| D．can’t be cured without washing hands |
The researchers also did an experiment that measured whether or not the threat of appearing un-American influenced respondents’ food choices . After being questioned about their ability to speak English , 75 percent of Asian-Americans identified a typical American food as their favorite. Only 25 percent of Asian-Americans who had not been asked if they spoke English did the same.
When their American identiy was called into question during a follow-up study, Asian-American participants also tended to choose typical American dishes , such as hamburgers and cheese sand wiches In that experiment , 55 Asian-Americans were asked to choose a meal from a local Asian or American restaurant . Some participants were told that only Americans could participate in the study. Those who chose the more typical American fare ended up consuming an extra 182 calories , including 12grams of fat and 7 grams of saturated fat(饱和脂肪).
“People who feel like they need to prove they belong to a culture will change their habits in an attempt to fit in , ”said Sauna Cheryan ,an anthor of the study and assistant professor of psychology at the University of Washington.” If immigrants and their children choose unhealthy American foods over healthier traditional foods across their lives , this process of fitting in could lead to poorer health .Cheryan added.
Social pressures , the study concluded , are at the heart of the problem. “In American society today , being American is associated with being white . Americans , who don’t fit this image even if they were born here and speak English , feel that pressure to prove that they’re American,” said Cheryan.
小题1:The author wants to show that .
| A．more and more Asians enjoy high-calorie snacks |
| B．immigrants tend to eat American junk food to fit in |
| C．most Americans are at the risk of heart disease |
| D．all the American people have a bad eating habit |
| A．Asian-Americans care less about their health |
| B．25 percent of Americans like junk food |
| C．choosing food is related to Asian-American’s situation |
| D．immigrants are forced to eat junk food |
| A．food offered as a meal | B．a person taking a taxi |
| C．money spent on food | D．an arranged thing to do |
| A．what immigrants have done is ridiculous |
| B．American traditional foods are healthier |
| C．immigrants risk their health in order to fit in |
| D．American culture affects immigrants deeply |
| A．The situation of employment. | B．The traditional culture. |
| C．The American government. | D．The pressures from society. |
Scientists in Finland recently found just such a link. In a recent study, they showed that overweight kids had different species of bacteria living in their guts.
You probably think of bacteria only as germs that can make you sick. While it’s true that some bacteria can make people ill, your body actually depends on some types of bacteria to help you digest food and extract nutrients from it. These “good” bacteria live in your guts, where they process the food you eat.
Human babies get these bacterial helpers from their moms. When a baby is born, some of the bacteria in the mother move into the baby’s body. Growing babies get additional “good” bacteria from the milk their mothers produce. And it turns out the bacteria might play an important role in regulating weight just six years later.
So how could these bacteria affect weight? The researchers still haven’t tested that question, but future tests might lead to an answer.
小题1:The “link” in Paragraph 2 refers to the relationship between _______.
| A．bacteria and the chance of being overweight | B．obesity and diabetes |
| C．diets and the chance of being overweight | D．bacteria and exercise |
| A．Helping to digest food. | B．Helping to take nutrients from food. |
| C．Helping to regulate weight. | D．Making a person ill. |
| A．introduce the role of bacteria in children’s weight |
| B．analyze the influence of obesity on kids |
| C．give advice on how to lose weight quickly |
| D．explain the function of bacteria in foods |
This isn’t particularly surprising, because approximately 500 pounds a year of Kopi Lowak make up the entire world supply. What is surprising is why this particular coffee is so rare. In fact, it’s not the plants that are rare. It’s the civet droppings. That’s right, the civet droppings—the body waste of the palm civet. Coffee beans aren’t Kopi Lowak until they’ve been digested(消化) and come out in the body waste of the palm civet.
Palm civets are tree-dwelling, raccoon-like little animals, native to Southeast Asia and the Indonesian islands. They also have a love for coffee cherries. According to Kopi Lowak suppliers, palm civets eat the fruit whole, but only digest the outer fruit, leaving the beans intact(完好无损). While the beans are not destroyed, they undergo a transformation in the animal’s body. A chemical substance in the digestive system of the palm civet causes some changes to the beans to give them a unique flavor(味道). However, this is not the only explanation why coffee beans retrieved from civet droppings have a special flavor all their own. Another possible reason is that palm civets have an unfailing instinct for picking the coffee cherries at the peak of their ripeness.
Kopi Lowak is reported to have a character in taste unlike any other coffee, complex with caramel undertones and an earthy flavor. Currently, most of the world’s supply of Kopi Lowak is sold in Japan, though a few US markets are also starting to stock up on Kopi Lowak.
小题1:What does “This” in the second paragraph refer to?
| A．Civet Coffee. | B．Blue Mountain coffee. |
| C．The high price of Kopi Lowak. | D．The unique taste of Kona. |
| A．There is a very limited supply of the beans. |
| B．The coffee trees that grow the beans are scarce. |
| C．It takes a long time for the coffee beans to ripen. |
| D．Only a few experts know how to produce the beans. |
| A．Why palm civets like the coffee beans. |
| B．Where Kopi Lowak is mainly harvested. |
| C．What chemicals are found in the civet’s digestive system. |
| D．How palm civets change coffee fruit to Kopi Lowak beans. |
| A．Little palm civets eat only the outer layer of the coffee cherries. |
| B．Palm civets somehow know the right time when the coffee fruit ripens. |
| C．Kopi Lowak is most popular in Southeast Asia and the Indonesian islands. |
| D．Kona and Blue Mountain are the most expensive coffees but only of average quality. |
Sleep experts have long known that getting a good night’s sleep is important.
It helps kids perform their best during the day. A recent study shows that sleep helps improve problem--- solving skills and creative thinking.
For the study, two groups of volunteers answered a math problem. The group that slept for eight hours solved the problem correctly more often than the group that did not get enough sleep.
While you sleep, your brain is busy doing its “homework”. It sorts out information from your day. Getting enough sleep each night can boost your brainpower. That will help you do your best in school. Experts say that, in return, can lead to better grades.
小题1:What is the best title for the passage?
| A．Too Much Sleep | B．It’s Homework Time |
| C．Sleep to Succeed | D．Math Problems |
| A．reduce | B．improve |
| C．disturb | D．worsen |
| A．It can improve problem-solving skills and creative thinking |
| B．It will help you do your best in school |
| C．It helps your brain sort out information from your day. |
| D．All of the above |
| A．People who sleep enough are good at math |
| B．Sleep is important for learning |
| C．If you get enough sleep, you don’t have to do your homework |
| D．Adults need more sleep than kids |
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