Yuan Longping, a Chinese scientist, was born in Hunan in 1930. Professor Yuan graduated from Southwest Agriculture College in 1953 and has given his whole attention to farming education and research. For many Chinese families, rice is an important part of almost every meal. He did some very important researches on rice.

Professor Yuan was a pioneer in hybrid rice(雜交水稻)research and made great achievements in this area. He is the first person to develop hybrid rice in the world. The achievements of Yuan Longping have greatly solved the food problem, since there is always not enough rice for the whole world. Therefore, it is regarded as the fifth invention after China’s Four Major Inventions.

Yuan Longping started the research of indica hybrid(秈稻雜交)in1964. At the beginning, he discovered male-sterile rice(雄性不育水稻). Then he put forward the idea of the third hybrid rice and carried out experiments on the farm. Yuan Longping successfully produced it in 1973. He was the first person to develop indica hybrid rice. The new technology was tested in many areas of South China in 1974 and 1975, and then tested in other areas. China became the first country that can produce hybrid rice. Yuan Longping is the first scientist who successfully changed the characteristic of rice. He made it possible to grow hybrid rice in such a large amount.

His pioneering work in hybrid rice has greatly changed the way people farm rice in China. It also set up China’s world leading position in hybrid rice research. As a result, he is given the title “Father of Hybrid Rice”.

1.What can we learn about Yuan Longping according to the 1st paragraph?

A.He is a great scientist. B.He is only a common farmer.

C.He was born in Hubei. D.He does chemical researches.

2.Why is Yuan Longping so famous?

A.He is the first person to grow rice in the world.

B.His rice is in the China’s Four Major Inventions.

C.His achievements helped solve the food problem worldwide.

D.His achievements are widely used in growing all kinds of food.

3.When did the third hybrid rice come out successfully?

A.In 1964. B.In 1973. C.In 1974. D.In 1975.

4.What does the underlined “It” refer to in the last paragraph?

A.The way people farm rice. B.The title “Father of Hybrid Rice”.

C.The fourth hybrid rice. D.Yuan’s pioneer work in hybrid rice.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：安徽省潛山市2019-2020學(xué)年九年級(jí)上學(xué)期期末英語(yǔ)試卷 題型：補(bǔ)全對(duì)話7選5

根據(jù)對(duì)話內(nèi)容，從方框內(nèi)的選項(xiàng)中選出能填入空白處的最佳答案。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

A: Good morning, Li Ming! 1.

B: Hi, Jim. My favorite festival is Mid-autumn Festival.

A: Do you know the story of Chang’e? 2.

B: Of course. Chang’e is the wife of Houyi. She ate the magic medicine and flew up to the moon and couldn’t come back.

A: Did Houyi miss her?

B: 3.He hoped that his wife could return. Because of this, people started the tradition of admiring the moon and 4.

A: I see. 5. I think that it’s very important to spend time with our families.

B: Yes, I think so.

A. Can you tell me about it?

B. My favorite festival is Water-Splashing Festival.

C. Yes, very much.

D. sharing mooncakes with their families.

E. I like to eat mooncakes that my mother makes.

F. What’s your favorite festival?

G. I also like Mid-autumn Festival.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：淮安市淮陰區(qū)2019-2020學(xué)年八年級(jí)上學(xué)期期末英語(yǔ)試卷 題型：單選題

Yancheng Nature Reserve is____________.

A.in the east China B.to east of China

C.on the east of China D.in the east of China

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：廣西桂林市2019-2020學(xué)年九年級(jí)上學(xué)期期末英語(yǔ)試卷 題型：單選題

He ____________spend his vacation in Hawaii next week.

A.is going to B.are going to C.goes to

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：湖南省張家界市永定區(qū)2019-2020學(xué)年八年級(jí)上學(xué)期期末英語(yǔ)試卷 題型：完型填空

We teenagers often have plenty of worries. _______ is best not to run away from problems. We should try_______best to solve them .

Firstly, we should find someone we trust _______to. In fact, our parents are best friend,_______ some of us often forget our parents have_______experience, and are always _______ to help us._______English ,we say sharing problems is like cutting it in half. So when you are in trouble, don’t forget our parents.

1.A.Its B.There C.It

2.A.our B.us C.their

3.A.talking B.to talk C.talk

4.A.so B.and C.but

5.A.many B.much C.more

6.A.those B.there C.this

7.A.In B.On C.As

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：深圳市寶安區(qū)2019-2020學(xué)年九年級(jí)上學(xué)期期末英語(yǔ)試卷 題型：單選題

—You look pale. What’s wrong?

—Er, yes. I am ________. I’m going to see a doctor after work.

A.under the weather B.under the control C.under the name

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：深圳市寶安區(qū)2019-2020學(xué)年九年級(jí)上學(xué)期期末英語(yǔ)試卷 題型：單選題

—Why did Jackie look so upset?

—Because he failed in the English test as a result of his carelessness. He felt ashamed of it.

A.because of B.under the name of C.as well as

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：山東省濟(jì)南市天橋區(qū)2018-2019學(xué)年八年級(jí)上學(xué)期期末英語(yǔ)試卷 題型：單選題

一Laura, I wonder_______action movies.

一Mmm..., I love them. They are really exciting and I'll see them tomorrow.

A.which do you like B.why you can't stand

C.when will you see D.what you think of

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：四川成都市金牛區(qū)2019-2020學(xué)年九年級(jí)上期期末英語(yǔ)試卷 題型：補(bǔ)全短文6選5

補(bǔ)全短文。根據(jù)短文內(nèi)容,從短文后的A~F選項(xiàng)中選出適當(dāng)?shù)倪x項(xiàng)補(bǔ)全短文。

Static shock（靜電）happens whenever two different materials come into contact with one another.1., Luckily, there are some ways you can use to reduce（減少） your possibility of experiencing static shock.

Changing your wearing

2. Certain types of shoes can reduce the risk of shock. Wear leather-soled（皮革底）shoes over rubber-soled （橡膠底）shoes when shopping, as the leather-soled shoes are less likely to produce static shock.3..Choose cotton when possible.

Preventing static shock at home:

Humidify your home.4. Your home should be above 30 percent rh (relative humidity). You can measure the humidity of your home by buying a humidity thermometer （濕度計(jì)）.

Avoiding static shock in public:

Many people experience static shock when shopping. You can do something useful to avoid static shock. When pushing a cart（推車）, hold onto something metal like your house keys.5.Moisturize （保濕）your skin before going out Dry skin, especially dry hands, increases the risk of static shock. Keep a travel-sized bottle of lotion（乳液）with you in case your skin gets dry.

A. People can build up static shock when they walk around.

B. So often wearing clothes made of wool can help us keep away from static shock.

C. While relatively harmless, static shocks can be annoying and even painful.

D. Static shocks are more likely to appear in dry environments.

E. Using less such materials can reduce the risk of static shock.

F. This give off any energy you build up while walking before you touch anything with your hands.

查看答案和解析>>

同步練習(xí)冊(cè)答案