1 . Researchers found brushing your teeth three or more times per day is linked with lower risk of heart failure and atrial fibrillation (心室颤动) —a heart condition that causes an irregular and often abnormally fast heart rate.

One possible theory behind the discovery is that frequent tooth brushing reduces bacteria living in the pocket between the teeth and gums, preventing them from entering the bloodstream. Existing studies show poor oral hygiene (口腔卫生) leads to bacteria in the blood, causing inflammation (炎症) in the body. Inflammation increases the risks of irregular heartbeat and heart failure, where the heart’s ability to pump blood or relax and fill with blood is weakened.

In their new research, scientists in South Korea examined the connection between oral hygiene and happening of these two conditions in a series of studies of more than 161, 000 participants aged between 40 and 79.

Participants underwent a routine medical examination between 2015 and 2016 and information was collected on height, weight, laboratory tests, illnesses, lifestyle, oral health, and oral hygiene behaviors. During a follow-up of ten and a half years on average, three percent of participants developed atrial fibrillation and around five percent developed heart failure.

The lead investigator of the new study is Tae-Jin Song, a doctor and professor at Mokdong Hospital at Ewha Woman’s University in Seoul, South Korea. He said, “We studied a large group over a long period, which adds strength to our findings.” But he also noted that the analysis was limited to one country and as an observational study it does not prove causation (因果关系).

An accompanying editorial states: “It is certainly too early to recommend tooth brushing for the prevention of atrial fibrillation and congestive (充血的) heart failure. While the role of inflammation in the happening of heart and blood vessels’ disease is becoming more and more evident, further studies are needed to explain strategies of public health importance.”

1. Which is true about frequent tooth brushing?

A．It promotes the heart beat faster.

B．It rids the bloodstream of bacteria.

C．It reduces the risk of heart failure.

D．It weakens the heart’s ability to pump blood.

2. What does the underlined part “these two conditions” in paragraph 3 refer to?

A．Inflammation and bacteria.

B．Heart failure and atrial fibrillation.

C．Oral hygiene and occurrence of heart failure.

D．The heart’s ability to pump blood or relax.

3. What can be inferred about the result of the research from Tae-Jin Song’s words?

A．It has its limit.	B．It’s discouraging.
C．It has its variety.	D．It’s unexpected.

4. From which is this text probably taken?

A．A diary.	B．A travel brochure.
C．A novel.	D．A medical magazine.

4 . How does the man avoid getting sick?

A．He buys many ordinary masks.

B．He goes everywhere on foot.

C．He takes public transportation.

6 . Holly Morrell will never forget the phone call that changed her life. Her father ______ to say that a 16-year-old boy had collapsed and died of a heart ______ on the field at the local high school. “He said, ‘We have to do something. ’ ” she ______.

          Although neither Holly nor her dad knew the boy, they were all too ______ with what had happened: sudden cardiac arrest（心脏骤停）, a（n）______ that kills about 325,000 Americans each year including one teenage athlete every three days. “Sudden cardiac arrest doesn’t distinguish,” Holly says. “And screening（筛查）______ lives.”

Within weeks of her dad’s call, Holly had ______ her first cardiac-screening event, at the ______ player’s high school. In 2007, she ______ Heartfelt, a nonprofit that provides free or low-cost cardiac screening to ______ and children. “We’ve screened almost 55,000 people,” says Holly. And today she’s aiming ______ higher: “My goal is to make screenings ______ to as many people as possible.”

Experts say that early detection is ______ to preventing SCA, which often occurs to seemingly healthy people with no ______ of heart disease. “We’re always looking for ways to ______ sudden cardiac death, and Holly’s program is one of those ______,” says Dr. Tony McCanta, a pediatric cardiologist. “What she’s doing is ______.” For Holly who had a cardiac defibrillator（除颤器）implanted to help ______ her heartbeat and has tolerated seven heart-related______, it was all meant to be. “I believe that my own ______ was saved so I could keep doing this work.”

1.

A．paused

B．called

C．tended

D．returned

2.

A．attack

B．rate

C．operation

D．beat

3.

A．replies

B．remarks

C．recalls

D．sighs

4.

A．familiar

B．strict

C．busy

D．tired

5.

A．trend

B．condition

C．injury

D．solution

6.

A．cures

B．treats

C．saves

D．respects

7.

A．taken

B．programmed

C．brought

D．organized

8.

A．fallen

B．felt

C．missed

D．lost

9.

A．built

B．predicted

C．played

D．launched

10.

A．adults

B．students

C．kids

D．teens

11.

A．ever

B．even

C．yet

D．still

12.

A．legal

B．luxury

C．available

D．suitable

13.

A．polite

B．proud

C．contrary

D．critical

14.

A．history

B．plot

C．contrast

D．story

15.

A．inspire

B．pretend

C．prevent

D．oppose

16.

A．ways

B．ideas

C．contracts

D．groups

17.

A．disappointing

B．confusing

C．frightening

D．amazing

18.

A．stop

B．regulate

C．scan

D．see

19.

A．challenges

B．works

C．surgeries

D．chances

20.

A．sickness

B．life

C．mind

D．job

7 . Beijing will provide COVID-19 vaccinations (接种疫苗) for certain groups in nursing homes, including the elderly and caregivers, on a voluntary basis to prevent a renewed outbreak at nursing homes during autumn and winter, the local government said.

Those who will receive the vaccines include nursing home kitchen workers, security guards and cleaners, Beijing Daily reported on Friday.

Xing Yinli, director of Jingkangyuan, a nursing home in Fengtai district with about 290 elderly residents (居民), said they have received the document (文件) recently and will strictly follow its guidance.

“It’s our top duty to strengthen prevention and control,” Xing said, adding they have been using methods such as keeping detailed records of resident contacts outside the nursing home, and encouraging online visits for family members.

As to vaccinations, she said they will ask for permission from residents, their family members and workers before giving vaccines.

In late October, Shaoxing, Zhejiang Province carried out an emergency COVID-19 vaccine program, allowing the public to ask for injections (注射) in advance, with key groups first. A similar program was also organized in Jiaxing, Ningbo and Yiwu in Zhejiang.

Nationwide, emergency use of home-grown COVID-19 vaccines was approved in June and launched in late July. China now has four coronavirus candidate vaccines in the third stage clinical trials (临床试验).

The document from Beijing also said nursing homes should conduct nucleic acid testing (核酸检测) every month among kitchen workers and residents who leave the nursing homes to see a doctor. Tests will cover all people in nursing homes considered at high risk if new infections are reported in the city. Besides, routine disinfections (消毒) should be strengthened in kitchens, storerooms and restrooms, it said. The document also recommended non-contact visits from family members.

1. Where can you probably find this article?

A．In a newspaper.	B．In a fashion magazine.
C．In a book review.	D．In a travel journal.

2. How can we understand the underlined sentence in Paragraph 7?

A．China is providing vaccinations nationwide.

B．The four candidate vaccines have finished clinical trails.

C．China has taken the lead in coronavirus vaccines worldwide.

D．China has made great progress in coronavirus vaccines.

3. What’s the main idea of this passage?

A．Nursing homes should conduct nucleic acid testing.

B．Beijing nursing homes are to be provided vaccines.

C．Certain groups will have vaccines first in late June.

D．Routine disinfections should be strengthened in kitchens.

4. What’s Xing Yinli’s attitude towards vaccinations?

A．Supportive.

B．Curious.

C．Doubtful.

D．Dissatisfied.

8 . Drugs are chemicals that change the way a person's body works. You've probably heard that drugs are bad for you, but what does that mean and why are they bad?

Medicines Are Legal Drugs

    1     you already know about one kind of drugs. Medicines are legal drugs, meaning doctors are allowed to prescribe them for patients, stores can sell them, and people are allowed to buy them.

Illegal Drugs

When people talk about a "drug problem", they usually mean abusing legal drugs or using illegal drugs, such as cocaine（冰毒）and heroin to get “high”.

    2    

Illegal drugs aren't good for anyone, but they are particularly bad for a kid or teen whose body is still growing。 Illegal drugs can damage the brain, heart, and other important organs. Cocaine, for instance, can cause a heart attack - even in a kid or teen. While using drugs, people are also less able to do well in school, sports, and other activities. It's often harder to think clearly and make good decisions.     3    

Why Do People Use Illegal Drugs?

Sometimes kids and teens try drugs to fit in with a group of friends.     4     Someone may use illegal drugs for many reasons, but often because they help the person escape from reality for a while.

    5     And using drugs often causes other problems on top of the problems the person had in the first place. Somebody who uses drugs might need professional help to slop using drugs. A grownup can help the person find the treatment needed to stop using drugs. Another way kids can help kids is by choosing not to try or use drugs.

A．Why Are Illegal Drugs Dangerous?

B．Are Illegal Drugs Dangerous for People?

C．Drugs don’t solve problems, of course.

D．Or they might be curious or just bored.

E．When you are not feeling well or right,

F．If you've ever been sick and had to take medicine,

G．People can do dangerous things when they use drugs.

9 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

When there is some who falls ill suddenly    1    gets injured, people will give them first aid    2    (temporary) to relieve their pain or save their lives. First aid is often     3     people can do before a doctor    4    (come) to the site. In most often the case, their illness or injury isn’t deadly enough to cause their    5    (death). However, if they are not properly     6    (deal) with, their situation could become    7    serious. Since     8     (give) first aid quickly can save lives, it is necessary for all students    9    (master) some of the    10    (base) skills about first aid.

10 . Last month, I slept through a flight from London to Beijing. Upon waking up, I was shocked to discover that I could no longer _______ my right arm and fingers. My arm just simply did not follow my brain’s _______ , as if it no longer _______ my body.

The doctor at the Sino Japanese Friendship Hospital _______ me to have suffered neural (神经的) injury. Aside from _______ that I see a physiotherapist (理疗师), he only told me, “Rest for two months first and come back for_______ check-up. ”

In that moment of _______ , a long-time family friend, who is an acupuncturist in Sichuan, _______to help. I started my acupuncture _______ the next day. I was sceptical at first, but my ________ was soon beaten by the results. After a few days, I could move my ________ Two weeks later, I could have meals using chopsticks. After a month, my arm and fingers were almost back to their ________ functions.

In that clinic, I heard many other patients’ ________ . One 11-year-old boy, who was born with ________ autism (自闭症), was treated at the age of three, and now he communicates quite ________ One lady, who suddenly became deaf two months ago, has just ________ her hearing.

I’m surprised at how these ________ needles can cure so many illnesses, many of which even big hospitals with expensive medical devices ________ with. Is it magic? No! But it is the right ________ of the Chinese tradition that brings ________ and happiness to friends here and farther.

1.

A．move

B．touch

C．understand

D．shape

2.

A．structures

B．instructions

C．schedules

D．principles

3.

A．got hold of

B．appealed to

C．belonged to

D．put up with

4.

A．judged

B．advised

C．forbade

D．requested

5.

A．warning

B．persuading

C．ordering

D．recommending

6.

A．happier

B．further

C．simpler

D．mature

7.

A．hopelessness

B．eagerness

C．hesitation

D．preparation

8.

A．refused

B．failed

C．pretended

D．offered

9.

A．punishment

B．research

C．treatment

D．learning

10.

A．shock

B．worry

C．loyalty

D．belief

11.

A．legs

B．fingers

C．knees

D．wrists

12.

A．normal

B．superior

C．unique

D．wonderful

13.

A．adventures

B．backgrounds

C．stories

D．efforts

14.

A．widespread

B．steady

C．reasonable

D．severe

15.

A．silently

B．carefully

C．smoothly

D．exactly

16.

A．influenced

B．admitted

C．damaged

D．recovered

17.

A．tiny

B．wide

C．rough

D．soft

18.

A．communicate

B．compete

C．start

D．struggle

19.

A．direction

B．occasion

C．wisdom

D．comment

20.

A．knowledge

B．health

C．experience

D．interest