题目
题型:不详难度:来源:
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 |
答案
小题1:A
小题2:D
小题3:A
解析
小题1:从第一段的最后一句可知答案是A。
小题2:D项不属于“good” bacteria的作用。
小题3:本文作者主要介绍了bacteria对于孩子体重状况所起的作用,因此A项符合作者意图。
核心考点
试题【Health experts have long worried about the increasing rate of obesity in kids. I】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
Run through water
Running in water is one of the toughest activities you can perform because the wet stuff is about 12 to 15 times as resistant (具有阻力的) as air. Try your hardest to run and you can burn about 17 calories per minute.
Start fast
Don’t be fooled — slow and steady won’t win the race. A recent study found that after a short warm-up, cyclists who rode hard during the first half of their workouts and then slowed for the second half burned about 10 percent more calories than those who started slow and finished fast.
Take to the sand
Here is some easy-to-remember advice on burning calories: the softer the surface, the more you burn. By walking or running on the beach, you can use up 20 to 50 percent more calories than you do going at the same pace on a hard trail.
Shut up and dance
Here’s the perfect excuse to sign up for that hip-hop dance class you’ve been eager to try. Surprising your body with new activities — dance, a new sport, you name it — forces it to work harder because it’s doing unfamiliar movements and using muscle groups in different ways.
Use your arms
Getting both your upper and lower body involved can provide a big calorie-burning advantage. So if you’re short of time or want to get everything you can out of your usual 45-minute workout, try total-body activities such as rowing ormming. You can evenng your arms as hard as you can while you walk.
小题1: How can water help you burn more calories?
A.By pushing your body. |
B.By wetting your clothes and shoes. |
C.By forcing you to run faster. |
D.By forcing your body to work harder. |
A.Dance. | B.Movement. | C.Body. | D.Muscle. |
A.One can burn more calories when walking on the sand than on land. |
B.One can burn more calories when walking on stones than on earth. |
C.One can burn more calories when running in water than on the sand. |
D.One can burn more calories when exercising using the upper body than using the lower body. |
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10. Who will be interested in this passage?
A. Doctors who treat diabetes. B. People who like free books.
C. Patients with heart disease. D. People who suffer diabetes and raise cholesterol.
11. What information will the booklet provide for its readers?
A. When to see a doctor. B. How to cure your diabetes.
C. How to know the level of your cholesterol. D. How to get the free book.
12. The word ChoLESterol in the passage probably means
A. keeping cholesterol steady B. making cholesterol fall down
C. the level of cholesterol D. curing your diabetes
13. The purpose of this advertisement is ________.
A. to help doctors get more patients B. to help people with higher level of cholesterol
C. to obtain benefit from the booklet D. to make the organization well known
The largest study of the effects of ageing on the heart has found that women’s longevity may be linked to the fact that their hearts do not lose their pumping power with age.
“We have found that the power of the male heart falls by 20-25 percent between 18 and 70 years of age,” said the head of the study, David Goldspink of Liverpool John Moores University in the UK.
“Within the heart there are millions of cells that enable it to beat. Between the age of 20 and 70, one-third of those cells die and are not replaced in men,” said Goldspink. “This is part of the ageing process.”
What surprises scientists is that the female heart sees very little loss of these cells. A healthy 70-year-old woman’s heart could perform almost as well as a 20-year-old one’s.
“This gender difference might just explain why women live longer than men,” said Goldspink. They studied more than 250 healthy men and women between the ages of 18 and 80, focusing on healthy persons to remove the confusing influence of disease. “The team has yet to find why ageing takes a greater loss on the male heart,” said Goldspink.
The good news is that men can improve the health of their heart with regular exercise. Goldspink stressed that women also need regular exercise to prevent their leg muscles becoming smaller and weaker as they age.
小题1:The underlined word “longevity” in the second paragraph probably refers to “________”.
A.health | B.long life | C.ageing | D.effect |
A.men’s heart cells |
B.women’s ageing process、 |
C.the gender difference |
D.hearts and long life |
A.women have more cells than men when they are born |
B.women can replace the cells that enable the heart to beat |
C.the female heart loses few of the cells with age |
D.women never lose their pumping power with age |
A.enable your heart to beat much faster |
B.find out the reason for ageing |
C.exercise regularly to keep your heart healthy |
D.prevent your cells from being lost |
A.the reason why ageing takes a greater loss on the male heart has been found out |
B.scientists are on the way to finding out why the male heart loses more of the cells |
C.the team has done something to prevent the male from suffering the greater loss |
D.women over 70 could lose more heart cells than those at the age of 20 |
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1)Take the medicine with water, followed by one tablet every eight hours, as required. For further night - time and early morning, take two tablets at bedtime. Do not take more than six tablets in 24 hours. For Children six to twelve years old, go to your doctor for advice. Reduce dosage if nervousness, restlessness or sleeplessness takes place.
2)Each pill of the medicine taken three times every day for fourteen years old. As usual, a pill 6∶00 a. m., before breakfast, one before 11∶00 and one before sleep. Not for children under six years old and old persons with heart attack.
3)The medicine for a person with a fever. Once two pills a day before sleep for adult. Not take the medicine without fever. Half for Children under 12 years old. Children with a high fever, go to see a doctor.
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C.have four times a day | D.have nine pills a day |
A.All of them. | B.Three kinds of medicine. |
C.Two kinds of medicine. | D.Almost not any medicine. |
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