1 . Blue whales are the largest animals in the world. But they are amazing _______ because of their huge size, but their slow heartbeat.

For the first time , scientists have researched the _______ of a blue whale. They found _______ when blue whales dive (潜水) for food, their heart rates (心率) are as _______ as 2 beats per (每) minute (bpm). Scientists used to _______ that their diving heart rate was 15 bpm. When the whales go to the ocean’s _______ to breathe, their heart rate is between 25 and 37 bpm.

Usually, the larger an animal is, _______ its heart beats, since it takes more time to pump (输送) blood around _______ body. Shrews, the smallest mammals (哺乳动物), have a heart rate of up to 1,000 bpm. Humans usually stay between 60 and 100 bpm.

_______ slowing their heart rate, blue whales can send more blood to the muscles (肌肉) that they use ________. These muscles become stronger, allowing the whales to dive for longer periods of time.

1.

A．neither

B．either

C．not only

D．although

2.

A．heartbeat

B．body size

C．diving

D．food

3.

A．it

B．that

C．once

D．if

4.

A．many

B．little

C．fast

D．slow

5.

A．regard

B．expect

C．think

D．doubt

6.

A．bottom

B．surface

C．center

D．side

7.

A．the slower

B．slower

C．the faster

D．faster

8.

A．it’s

B．its

C．his

D．her

9.

A．By

B．In

C．On

D．At

10.

A．to pump blood

B．to eat

C．to breathe

D．to dive

2 . How to fight against COVID-19(新冠病毒)? We choose some books to help you. The books were translated into 13 languages, including Japanese, French and Russian. They are convenient for readers to enjoy.

	Virus, Virus, You Cannot Scare Me! (Writer: Mu Xiangzhen) The book makes parents and children be able to learn—in a fun way—about how viruses（病毒）spread and what people can do to protect themselves. It tells children not to fear about viruses. Besides, it also introduces the idea of getting well with nature, and hopes children can protect wild life and the natural environment.
	A Special Spring Festival (Writer: Gao Jing) This book pictures children’s special Spring Festival in China during the outbreak of COVID-19. It tells a story of a common family in China. It tries to answer the child’s question “Why can’t I be allowed to play outside?” It tells the child what COVID-19 is, how it spreads, and how we can protect ourselves from it. The pictures show love between family members, friends and everyone.
	Ten Tips to Fight Monsters (Writer: Dong Ruihan) Dad leaves 10 tips to help us fight the virus. Who will win the war? The story will gently teach children how to prevent the disease (疾病)in a language that they can easily understand. It will help kids remain calm in the hard time, and encourage them to help family members to prevent the disease.
	A Brief History of Viruses for Children (Writer: Changsha White-flag Dolphin Children’s Book Workshop) This storybook tells the beginning of the virus, so the readers can understand the history of the virus easily. The book sets up a “Ten Questions about COVID-19” section, which explains the knowledge of COVID-19(including how it spreads), helping children readers to understand the virus basing on (基于)reason and science.

1. All the four books are about ________.

A．children’s daily activities	B．ten questions about COVID-19
C．fighting against COVID-19	D．love between family members, friends and everyone

2. If you want to know the beginning of the virus, you can read________.

A．Virus, Virus, You Cannot Scare Me!	B．A Special Spring Festival.
C．Ten Tips to Fight Monsters.	D．A Brief History of Viruses for Children.

3. Which writer hopes children can protect wild life?

A．Mu Xiangzhen.	B．Gao Jing.
C．Dong Ruihan.	D．Changsha Whiteflag Dolphin Children's Book Workshop.

4. The spread of the virus is mentioned in ________.
①Virus, Virus, You Cannot Scare Me! ②A Special Spring Festival
③Ten Tips to Fight Monsters     ④ A Brief History of Viruses for Children

A．①②③

B．①②④

C．①③④

D．②③④

5. According to the passage, which one is NOT true?

A．The books were translated into many languages.

B．Children can do something to protect themselves.

C．We can understand the virus basing on reason and science.

D．We have won the war against COVID-19 completely.

3 . 阅读短文,根据短文内容,从所给选项中选出能填入空白处的最佳选项

It is probably no exaggeration (夸张) to say that, these days, anyone who uses WeChat or QQ also uses memes. ______ Memes are usually pictures or GIFs (动图) of famous people, TV and film scenes. They are often paired with a line of words explaining the pictures.

You must have seen the memes of singer Huang Zitao with his famous words, "I will not die easily."     2     Others include actor Zhou Jie shouting with anger and basketball player Yao Ming laughing but looking like crying. If there is something in common with these people, it is probable that they all have exaggerated facial expressions. Users make memes of them for fun.

On the other hand, memes make online messaging chatting closer to real life than just sending text messages.     3     For some people, like youth, they can chat online only using memes without typing a single word. Sometimes this turns into a kind of competition to see who has the most or the funniest memes.     4     Do you want to have a try, too?

A．Huang’s memes are one of the users' favorites.

B．Memes or biaoqingbao have become important in online chatting (聊天) among Chinese.

C．If they are tired of the popular ones, they can make their own memes using meme apps.

D．Because they give people information in a simpler, funnier and clearer way.

1. Which of the following is true according to the passage?   _________

A．Memes play an important part in online chatting all over the world.

B．All the people can chat on line without typing a single word.

C．People can only use popular memes even though they feel bored of them.

D．Users make memes of famous people for fun.

4 . Almost everyone in the world uses oil (石油) in some way. Without oil, the world will stop, so men look for it everywhere. Oilmen drill for oil in deserts, in mountains and under the sea. Quite often they find nothing, but their search for oil always goes on. Oil is very important because none of our machines can run without it. Big ships carry oil everywhere.Perhaps the oil in your father’s car comes from somewhere far away. Perhaps it comes from Iraq (伊拉克) or Venezuela (委内瑞拉).Cars need oil, and so do many other things. How many things can you name?
1.           oil in some way in the world.

A．Many people use

B．Hardly anyone uses

C．All people use

D．Few people use

2. What does the underlined word “drill” mean in Chinese?

A．操练

B．训练

C．钻探

D．研究

3. Oilmen sometimes find oil          .

A．in deserts

B．in mountains

C．under the sea

D．All of the above.

4. The sentence “Big ships carry oil everywhere.” tells us          .

A．oil comes from everywhere

B．oil comes from big ships

C．oil is needed everywhere

D．big ships need oil everywhere

5. Which of the following sentence is NOT true?

A．There is oil in deserts，mountains and under the sea.

B．Not all of our machines need oil.

C．Although oilmen don’t find oil quite often, they always go on searching for it.

D．Maybe the oil in your father’s car comes from Iraq.

5 . Everyone must go to bed early and get up early, or we won’t be healthy and clever.
Is this true? Perhaps it is. The body must have enough sleep. Children of your age need ten hours’ sleep every day. If you don’t go to bed early, you won’t have enough sleep. Then you can’t think properly and can’t do your work properly. You’ll not be clever.
Some people go to bed late and get up late. This is not good for them. We must sleep at night when is is dark. The dark helps us to sleep soundly. When the daytime comes, we must get up. This is the time for exercise. If you lack exercise, the body becomes weak. Exercise keeps a strong body.
Exercise helps the blood（血液）flow（流动） around inside the body. This is very important. Blood takes food to all parts of our body. The brain also needs blood. If we keep our body healthy and take exercise, we can think better.
1. If we want to be healthy and clever, we must go to bed____.

A．late and get up early	B．early and get up late
C．early and get up early	D．late and get up late

2. Children of your age need____.

A．ten hours’ sleep	B．nine hours’ sleep
C．twelve hours’ sleep	D．eleven hours’ sleep

3. The best time to sleep is when____.

A．daytime comes	B．it is dark
C．we are taking exercise	D．it is late afternoon

4. If you lack exercise, the body becomes weak. “Lack” means “______”

A．加大

B．坚持

C．丰富

D．缺乏

5. Exercise ______.

A．makes more blood	B．helps the blood to flow
C．makes food for our blood	D．makes our brain tired