People who smoke could lose around one third ...

People who smoke could lose around one third of their daily memory, researchers say.

A study by a team at Northumbria University showed that smokers lost more of their memory when compared to non-smokers.

And the research also found that those who kicked the habit saw their ability to recollect information back to almost the same level as non-smokers.

The study involved more than seventy 18-to-25-year-olds and included a research of the university .Those who took part were asked to recall small details, such as a list of songs played at the Students’ Union and tasks completed at various points .

Smokers performed badly, remembering just 59 %of tasks. But those who had given up smoking remembered 74 %and those who had never smoked recalled 81 % of tasks.

Dr. Tom Heffernan, who leads Northumbria University’s Collaboration for Drug and Alcohol Research Group, said the findings would be useful in movements against smoking. He said, “This is the first time that a study has set out to examine whether giving up smoking has an effect on memory.”

“We already know that giving up smoking has huge health benefits (好处)for the body, but this study also shows how stopping smoking can have knock-on benefits for cognitive functions （认知）too. ’’

1.The research by Tom Heffernan’s team shows that smokers remember_____.

A.15% less than those who have never smoked

B.33% less than those who have given up smoking

C.22% less than those who have never smoked

D.22% less than those who have given up smoking

2.It can be learned from the passage that ________.

A.nobody shows any interest in research by Tom Heffernan’s team

B.nobody believes the result of the research by Tom Heffernan’s team

C.nobody will risk their health or even life to go on smoking anymore

D.nobody had done the same research as Tom Heffernan’s team before

3.According to Tom Heffernan, it is necessary for smokers to ______.

A.train their memory B.give up smoking

C.remember small details D.Be given more tasks

4.Which of the following can be the proper title for the passage?

A.Warning :Smokers could be more forgetful.

B.Warning: Smokers wouldn’t get back memory

C.Warning: Smoking must be harmful to health

D.Warning: Smoking might cause mental problems

九年级英语阅读单选中等难度题查看答案及解析

People who smoke could lose around one third of their daily memory, researchers say.

A study by a team at Northumbria University showed that smokers lost more of their memory when compared to non-smokers.

And the research also found that those who kicked the habit saw their ability to recollect information back to almost the same level as non-smokers.

The study involved more than seventy 18-to-25-year-olds and included a research of the university .Those who took part were asked to recall small details, such as a list of songs played at the Students’ Union and tasks completed at various points .

Smokers performed badly, remembering just 59 %of tasks. But those who had given up smoking remembered 74 %and those who had never smoked recalled 81 % of tasks.

Dr. Tom Heffernan, who leads Northumbria University’s Collaboration for Drug and Alcohol Research Group, said the findings would be useful in movements against smoking. He said, “This is the first time that a study has set out to examine whether giving up smoking has an effect on memory.”

“We already know that giving up smoking has huge health benefits (好处)for the body, but this study also shows how stopping smoking can have knock-on benefits for cognitive functions （认知）too. ’’

1.The research by Tom Heffernan’s team shows that smokers remember_____.

A. 15% less than those who have never smoked

B. 33% less than those who have given up smoking

C. 22% less than those who have never smoked

D. 22% less than those who have given up smoking

2.It can be learned from the passage that ________.

A. nobody shows any interest in research by Tom Heffernan’s team

B. nobody believes the result of the research by Tom Heffernan’s team

C. nobody will risk their health or even life to go on smoking anymore

D. nobody had done the same research as Tom Heffernan’s team before

3.According to Tom Heffernan, it is necessary for smokers to ______.

A. train their memory　　 B. give up smoking

C. remember small details　　 D. Be given more tasks

4.Which of the following can be the proper title for the passage?

A. Warning :Smokers could be more forgetful.

B. Warning: Smokers wouldn’t get back memory

C. Warning: Smoking must be harmful to health

D. Warning: Smoking might cause mental problems

九年级英语阅读单选困难题查看答案及解析

People spend almost a third of their lives doing one thing: sleeping. Every year there is a day for people around the world to celebrate the _______ of good and healthy sleep一World Sleep Day.

Sleep is like food for the _______. A good amount of sleep helps the body and brain grow and_______ People of different _______ need different amounts of sleep.' According to the National Sleep Foundation in the US, _______ need seven to nine hours of sleep every night. For students aged 10 to 17, a(n）_______ amount is about eight to nine hours per night.

_______, many students don't get enough sleep because of early school start times and too　　 much homework. The China Youth and Children Research Centre reported that about 80 percent of middle school students don't get _______ sleep.

A lack（缺乏）of sleep can _______ influence a person's life. Students ____________ don't get enough sleep may get poor grades. They cannot pay ____________ in class or do well in sports.

To solve this problem, scientists advise that students should have ____________schoolwork and more time to sleep. There are some other ways to help people get enough sleep, such as ____________ a 20-minute nap during the day. Good sleep habits are also ____________. For example, try to go to sleep and wake up at the same time every day, ____________ on weekends and during holidays.

1.A.importance B.influence C.difference D.habit

2.A.arm B.brain C.leg D.shoulder

3.A.disappear B.discover C.develop D.destroy

4.A.countries B.names C.ages D.jobs

5.A.doctors B.parents C.scientists D.adults

6.A.impossible B.different C.difficult D.healthy

7.A.Besides B.Otherwise C.Also D.However

8.A.good B.long C.enough D.many

9.A.closely B.greatly C.hardly D.mostly

10.A.who B.which C.whom D.what

11.A.visit B.work C.money D.attention

12.A.more B.much C.less D.fewer

13.A.making B.taking C.catching D.sleeping

14.A.harmful B.helpful C.thankful D.wonderful

15.A.even B.always C.usually D.never

九年级英语完型填空中等难度题查看答案及解析

阅读下面短文，用括号内所给词的适当形式填空，必要时可加助动词或情态动词。

People spend almost a third of their lives doing one thing—sleeping. Every year, there is a day for people around the world to celebrate the1. (important) of good and healthy sleep—World Sleep Day.

Sleep is like food for the brain. Healthy sleep helps the body and brain grow and develop. People of different ages need different amounts of sleep. It is said that eight hours per night2. (consider) the average amount of sleep. For students aged 10 to 17, a healthy amount is about eight to nine hours per night. However, last year, the China Youth and Children Research Center 3. (report) that about four4. (five) of middle school students didn’t get enough sleep. For some students, they want to sleep early, but they keep 5. (worry) about their schoolwork and can’t fall 6. (sleep) quickly. A lack (缺乏) of sleep can greatly affect (影响) a person’s life. Students who don’t get enough sleep may get poor grades. They cannot pay attention in class or do well in sports.

7. (solve) this kind of problem, scientists advise that students should have

8. (little) schoolwork and more time to sleep. There are some other ways to help people get enough sleep, such as 9. (take) a 20-minute nap (午睡) during the day, trying to go to sleep earlier and so on . Good sleeping habits are also 10. (help). For example, try to go to sleep and wake up at the same time every day, even on weekends and during the day.

九年级英语语法填空中等难度题查看答案及解析

There are not many people around who say they like rats(老鼠). When you see one of them, you may want to run in the opposite direction.

There is one man though who has always enjoyed staying with rats, even when he was a young boy. His name is Bart Weetjens and he comes from Belgium in Europe. As he grew up, he learned everything about rats. He knew that they have a very strong sense of smell. He realized that it might be possible to train rats to help solve a problem that troubled some Southeast Asian countries.

Clearing away unexploded bombs and landmines(未爆炸的炸弹和地雷) is a difficult job. Bart began to train rats to look for explosives. Because a rat’s sense of smell is so strong, they are able to smell a thing known as TNT that is used in bombs. And because rats are not heavy, if they place their weight on an unexploded bomb, they will not cause it to explode(爆炸).

Bart chose African Giant Pouched Rats for the job. They are well known for being calm and smart. Training begins when they are about six weeks old, and it lasts for nine months. Once trained, one rat can search up to 200m in 20 minutes. The same area would take a human up to four days. Trained rats are known as Mine Detection Rats, or MDRs, and they have worked successfully in Cambodia since 2015.

1.When Bart Weetjens was a young boy, he enjoyed ____________.

2.As Bart Weetjens grew up, he learned that rats have a very ____________.

3.Rats will not cause an unexploded bomb to explode because they are ____________.

4.It takes ____________ to train African Giant Pouched Rats.

5.MDRs have ____________ since 2015.

九年级英语信息归纳中等难度题查看答案及解析

In my eyes, one of the best ways to lose weight is　　　　　　 regularly in your daily life.

A. exercise　　 B. to exercise

C. exercises　　 D. exercised

九年级英语单选题中等难度题查看答案及解析

“Sorry” is a word that people in Britain often say in their daily life.

One day while I was 76.1. on the street，a young man ran by hurriedly，brushing(轻擦) against my handbag.He continued his way，but turned 77.2. and said “sorry” to me.Even in a rush，he didn't 78.3. to say “sorry”．One day，after I bought some bananas，the shop­keeper was passing me the change，but I wasn't ready for it and a coin dropped onto the ground.“Sorry，Madam.” he said 79.4. bending(弯腰) to pick it up.I was 80.5. why he said “sorry” to me.Another time，I stepped on a man's 81.6. at the entrance to a cinema.At the same time，we 82.7. said “sorry”．

Slowly，I got to know that when something unpleasant happens in daily life，the British don't 83.8.much about who is wrong.If someone is in trouble，a “sorry” is always 84.9.．Perhaps that is 85.10. I seldom see people quarrel on the buses or streets in Britain.

九年级英语短文填空困难题查看答案及解析

“Sorry” is a word that people in Britain often say in their daily life.

One day while I was w 1.________ on the street, a young man ran by hurriedly, brushing(轻擦) against my handbag. He continued his way, but turned b 2.________ and said “sorry” to me. Even in a rush, he didn’t f 3.________ to say “sorry”. One day, after I bought some bananas, the shopkeeper was passing me the change, but I wasn’t ready for it and a coin dropped onto the ground. “Sorry, Madam,” he said w 4.________ bending to pick it up. I was s 5.________ why he said “sorry” to me. Another time, I stepped on a man’s f 6.________ at the entrance to a cinema. At the same time, we b 7.________ said “sorry”.

Slowly, I got to k8.________ that when something unpleasant happens in daily life, the British don’t c 9.________ much about who is wrong. If someone is in trouble, a “sorry” is always n 10.. Perhaps that is w 11.________I seldom see people quarrel on the buses or streets in Britain.

九年级英语其他题中等难度题查看答案及解析

—I really dislike the young people who always lie around all day but rely on their parents.

—They are called NEET. It refers to the young who are not in education, employment or training

A.sit around B.hang on C.tell lies

九年级英语单选题中等难度题查看答案及解析

Every year thousands of people get hurt or lose their lives when they are crossing the road. Most of them are old people and children. Old people often get hurt because they can’t see or hear very well. Children usually meet with accidents because of their carelessness. They forget to look and listen before they cross the road.

How can we reduce (减少) traffic accidents? All of us must obey the traffic rules. For the drivers, they shouldn’t drive too fast. If they drive too fast, it will be very difficult to stop the cars in a very short time. For the pedestrians, it’s very important to be careful when they are walking on the road. You must stop and look both ways before crossing the road. Look left first, next look right, and then look left again. When you make sure that it is safe, you can cross it. The right way to cross the road is to walk quickly. It’s not safe to run. If people run across the road, they may fall down. We should try to help children, old people, and blind people to cross the road, and never play in the street.

1.Many old people and children often get hurt when they　　　　　　 .

A. play outside　　 　 B. cross the road

C. play in the park D. drive too fast

2.To reduce traffic accidents,　　　　　　 isn’t allowed in the street.

A. driving too fast

B. helping the blind cross the road

C. crossing the road carefully

D. obeying the traffic rules

3.When crossing the road, we mustn’t 　　　　　　 .

A. stop and look both ways

B. run quickly

C. make sure that it is safe

D. look around carefully

4.What does the underlined word “pedestrians” mean?

A. 司机　　 B. 洒水车　　 C. 行人　 D. 公交车

5.What is the passage mainly about?

A. Helping the old cross the road.

B. How to reduce traffic accidents.

C. Making more traffic rules.

D. Traffic accidents are terrible.

九年级英语阅读理解中等难度题查看答案及解析