初中英语试题

It’s often said, “You can’t live only on air.” But now the Chinese scientists can tell you: Maybe you can.

Recently, some Chinese scientists have made a big breakthrough (突破). They turned CO2 into starch (淀粉).

Starch is the main part of rice and corn that we eat every day. Usually, it’s created by plants with CO2, water and sunlight. According to the team’s director Ma Yanhe, it takes the plants nearly sixty steps to produce starch. But now, the team, after six years of hard work, has found a simpler way to do this, with only eleven steps.

“Our study shows that creating something like starch is possible in a laboratory, and this technology may be helpful in many areas,” said Ma.

The scientists first turned CO2 and hydrogen (氢气) into methanol (甲醇). Then they made these methanol molecules (分子) into bigger and more complex (复杂的) molecules. Finally the starch came out.

This method makes it possible to produce food in factories instead of traditional farming. This will not only help make plenty of food, but also save water and land. It may also help recycle CO2 to deal with climate (气候) change, according to China Daily.

The study can be helpful in space, too. Astronauts may no longer need to worry about their food as they travel in space. They may simply turn the CO2 they breathe out into the food they eat!

(1). What achievement have the Chinese scientists made recently?

A．	They created starch with CO2.
B．	They grew corn in space.
C．	They turned O2 into starch.
D．	They improved traditional farming.

(2). How many steps do the scientists need to produce starch now?

A．

3.

B．

6.

C．

11.

D．

60.

(3). What did the scientists do first to make starch?

A．	They recycled CO2 in space.
B．	They produced rice and corn on the farm.
C．	They turned CO2 and hydrogen into methanol.
D．	They made methanol molecules into bigger and more complex ones.

(4). The technology may be helpful in the following areas EXCEPT ________.

A．	making food
B．	putting sunlight to good use
C．	saving water and land
D．	dealing with climate change

(5). What’s the best title of the passage?

A．	How to Deal with CO2
B．	The Advantages of Making Starch
C．	How to Make Food in Space
D．	China’s First Step in Man-made Food

Now, more and more people have difficulties in falling asleep. “In fact, we can train our brain to fall asleep,” says sleep expert Michael Grandner. Here are his top ways.

Make a plan and stick to it.

Melatonin (褪黑素) is produced by the body to control when you get sleepy and when you wake up. As night falls, the levels of melatonin rise, telling the body that it’s time for bed. And the levels naturally fall as daylight comes near, getting you ready to greet the day.

The release (释放) of melatonin needs to be at regular (有规律的) times. So if your bedtime and wake-up time change from day to day, your body doesn’t know how to respond (回应). So it’s important to have a regular bedtime and wake up time, even on weekends.

Don’t lie in bed awake.

In fact，this way is very helpful. Whether it’s the beginning of the night or the middle of the night, if you’ve been awake for 20 or 30 minutes, get up. Maybe you just need five minutes to get sleepy, or maybe an hour, but don’t spend that time awake in bed.

Change your attitude (态度) about sleep.

Many people regard sleeping as the final thing in a busy day, so they would rather delay sleeping to do housework, schoolwork or others. That thought needs to be changed. Make sure your sleep time is enough in order to work better the next day. It may sound like a small change, but it’s an important one.

(1). Michael Grandner gives us ________ ways in this passage.

A．

one

B．

two

C．

three

D．

four

(2). When do the levels of melatonin rise?

A．	When you’re tired.	B．	When night falls.
C．	When you feel sleepy.	D．	When daylight comes.

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

A．	A rise in melatonin levels tells the body it’s the bedtime.
B．	Enough sleep time can’t make you work better the next day.
C．	It’s not necessary for us to sleep or wake up at a regular time.
D．	It’s best to stay in bed if you’re awake too long during the night.

(4). What does the underlined word “delay” mean in Chinese?

A．

暗示

B．

督促

C．

调理

D．

推迟

(5). What is the passage mainly about?

A．	The importance of sleeping well.
B．	The change of bedtime and wake-up time.
C．	When to go to bed and wake up.
D．	How to train your brain for better sleep.

A Chinese knot (中国结) is woven (编织) with a single rope (绳). It has different shapes. Each shape has its own meaning. People can use ropes of different colors to weave a Chinese knot, but they usually use red because it means good luck.

The Chinese knot, a folk art, has a long history. People first made them to record information and send messages before they started to use words. The knots were used for decoration (装饰) and to express thoughts and feelings in the Tang Dynasty. They were later popular in the Ming and Qing dynasties. But this art wasn’t really accepted by the common people until the Qing Dynasty.

Even today, Chinese knots still hold the value of feelings when they are sent as gifts. For example, lovers may give a knot to show their love. The “double happiness knot” is given and used at weddings (婚礼) to express each other’s love and wishes for growing old together.

Knots are also used when people make traditional clothes in China. They can play the role of buttons (纽扣) and now silk is widely used to make these clothing knots.

Many tourists including foreigners like to buy Chinese knots as gifts during their trips. There are many shopping streets for people to buy Chinese knots. Yiwu Commodity Market in Zhejiang Province is a good place for that. There are many different kinds of beautiful Chinese knots there. They are popular with customers.

(1). ________ of a Chinese knot can show its own meaning.

A．

The size

B．

The weight

C．

The color

D．

The shape

(2). Why do people usually use red ropes to weave the Chinese knots?

A．	Because they look nice.
B．	Because they mean good luck.
C．	Because they show love.
D．	Because they mean growing old together.

(3). When did Chinese common people really accept the folk art?

A．	In the Tang Dynasty.	B．	In the Song Dynasty.
C．	In the Ming Dynasty.	D．	In the Qing Dynasty.

(4). What is widely used to make traditional clothing buttons now?

A．

Wood.

B．

Metal.

C．

Silk.

D．

Plastic.

(5). Which of the following is NOT true?

A．	Only Chinese people like to buy the Chinese knots.
B．	Today people use a “double happiness knot” to express love to their lovers.
C．	Tourists can buy many different kinds of Chinese knots in Yiwu Commodity Market.
D．	People used Chinese knots to record information and send messages before using words.

Have you ever heard of Jiang Mengnan? She is ___(1)__ unusual girl. She received the award (奖) of the Person Touching China for 2021___(2)__ March 3rd. In 2018, she was accepted by Tsinghua University as a PhD (博士) student. It was a long journey for her to become a student of the famous university because most of her life was in a __(3)__ world. Her story has moved thousands of people.

Jiang was born in 1992. Her parents named her Mengnan which means “dream and south”. Her parents wished that their ___(4)__ would enjoy a life of peace. However, when she was six months old, her peaceful and beautiful life __(5)__. She lost her hearing because of taking the wrong medicine. As she ___(6)___, she began to learn lip-reading (唇读). She overcame lots of difficulties and practiced more than 1,000 times to learn to pronounce each word correctly.

Through her hard work, she ___(7)___ Jilin University with a high score of 615 marks in 2011. Jiang decided to study life science because she hoped she could spend all her life on people’s __(8)__. During her college days, she was a __(9)__ to help the disabled children in her hometown.

“For people ___(10)___ are deaf like me, I want to tell them that we can do as much as the normal people, and maybe we can even do better!”

(1).

A．

a

B．

an

C．

the

D．

/

(2).

A．

in

B．

at

C．

on

D．

from

(3).

A．

silent

B．

strange

C．

colorful

D．

noisy

(4).

A．

sister

B．

brother

C．

son

D．

daughter

(5).

A．

changes

B．

changed

C．

is changing

D．

has changed

(6).

A．

showed up

B．

ended up

C．

grew up

D．

woke up

(7).

A．

left

B．

entered

C．

visited

D．

introduced

(8).

A．

exercise

B．

work

C．

study

D．

health

(9).

A．

doctor

B．

manager

C．

volunteer

D．

master

(10).

A．

who

B．

which

C．

what

D．

whom

—Would you like to go to the mountains with me tomorrow, Gina?

—________. Catch you at 9:00 am.

A．	Sure, I’d love to	B．	Lucky you
C．	Yes, please	D．	Have a good time

— I wonder ________.

— I’m not sure. Maybe yes.

A．	if has Dave got his driver’s license
B．	how long has Dave got his driver’s license
C．	if Dave has got his driver’s license
D．	how long Dave has got his driver’s license

— People ________ to take their temperatures before they go into the supermarket during the COVID-19 pandemic (新冠疫情).

— I think it’s a good way to protect ourselves.

A．

are asking

B．

are asked

C．

asked

D．

ask

—Are you going to ride your bike to the beach?

—Yes. It’s ________ of all.

A．

convenient

B．

more convenient

C．

most convenient

D．

the most convenient

—There ________ a talk by Zhong Nanshan in our school tomorrow afternoon.

—Great! We can’t wait!

A．

is

B．

was

C．

will be

D．

will have

—________ wonderful the opening of the Beijing Winter Olympics is!

—So it is.

A．

How a

B．

How

C．

What a

D．

What

— What are they doing?

— They are discussing what to ________ to the school in the village.

A．

give away

B．

throw away

C．

clean up

D．

cut up

— Julie, why did you ________ the job?

— Because I found a better one.

A．

turn up

B．

turn down

C．

look for

D．

look through

— Amy, don’t forget ________ your mask (口罩) when you go out.

— Don’t worry, mom. I will.

A．

wear

B．

wears

C．

to wear

D．

wearing

—The air pollution in our city is becoming worse and worse.

—That’s right. But the government is trying to ________ this problem.

A．

solve

B．

plan

C．

answer

D．

discover

Tina gets up early every morning, so she is ________ late for school.

A．

often

B．

always

C．

usually

D．

never