一、用括号中所给词的适当形式填空。
1. I (think) my English book was in my schoolbag, but in fact I left it at home.
2. Listen! How heavily the rain (beat) against the car windows!
3. It's said that everything (weigh) more on the Earth than on Mars.
4. The food must (store) in the fridge, or it will go bad easily.
5. There is little (possible) that our school basketball team will win this game.

1. thought 2. is beating 3. weighs 4. be stored 5. possibility

二、单项选择。
1. According to the guide living on Mars, there's traffic air pollution on it.

A.to；of
B.of；without
C.to；without
D.of；of

1. C

2. — It's so hot today! What should we do for fun?
— I don't want to play basketball outside. I staying at home and watching a movie. There's a new animated film on TV.

A.would like
B.feel like
C.hope to
D.wait for

2. B

3. A landmark in the history of science was made by a photo came out on April 10th, 2019 about the black hole in a faraway galaxy(星系).

A.who
B.which
C.what
D.when

3. B

4. I'm not sure if I'm going to Tim's party. I may go to the concert .

A.before
B.instead
C.early
D.late

4. B

5. The old man prefers to at home rather than to have a picnic.

A.staying；going
B.stay；going
C.stay；go
D.staying；go

5. C

三、句子翻译。
1. 他想知道一百年后火星上的汽车是什么样的。
He wondered on Mars in 100 years.
2. 去国外的旅程将会令人激动也会有挑战性。
The journey abroad .
3. 航天员在太空中进行的实验颇有价值，值得开展。
The experiments done in space by the astronauts are .
4. 她很清楚她必须面对哪些困难。

5. 他的活干得太糟糕了，我只好亲自从头再做一次。

1. what cars would be like 2. will be exciting as well as challenging 3. so valuable that they are worth carrying out 4. She is well aware of the difficulties that she has to face. 5. He did the work so badly that I had to do it all over again myself.

四、阅读理解。〔人与自然——宇宙探索〕
For thousands of years, humans have explored the Earth. Nowadays, we are exploring space. Astronomers are the modern - day explorers. Now many astronomers are looking for new places for humans to live in the future. But where do astronomers start?
First of all, astronomers look for a star. That's because our own Earth moves around a star (the Sun). More importantly, it is the correct distance from the Sun for heat and light. So when astronomers have found the star, they look at the planets around it. In recent years, astronomers have found many new planets with stars. However, many of these planets are either too near the star or too far away.
Next, if the planet is in a good position, astronomers will look for three key things: water, air and rock. Water is important because all life needs water. Humans can drink it and also grow plants with water. And plants provide air for humans to breathe and food to eat. Rock on a planet is also important. That's because there is often water under the rock.
After many years of scrutinizing stars and planets, astronomers have found a planet that is almost similar to the Earth. It's Gliese 581g and it's near a star. Astronomers think it has water and rock and that the average temperature is between $-31\ °\mathrm{C}$ and $-12\ °\mathrm{C}$. That's cold, but not colder than Antarctica or the Arctic Circle, for example. Gliese 581g is bigger than the Earth. A year on Gliese 581g is only 37 Earth days instead of 365. But astronomers do not think these are big differences and some of them think Gliese 581g will be a new Earth. However, Gliese 581g is about twenty light years from the Earth.
1. What do astronomers have to find first before starting to look for a new place for humans to live?
A. A new star.
B. A new planet.
C. Some heat.
D. Some light.
2. What does the rock on a planet tell us?
A. The star is in a right position.
B. We may discover water under it.
C. The planet is near the Sun.
D. There can be air around the rock.
3. What does the underlined word “scrutinizing” mean in the last paragraph?
A. Discussing.
B. Waiting.
C. Observing.
D. Travelling.
4. What's the main idea of the text?
A. Gliese 581g is already a new Earth.
B. There are planets similar to our Earth.
C. Water, air and rock are important.
D. Astronomers are looking for a new Earth.

1~4. ABCD