Rearrange the sentences to make meaningful sentences

Do/ 88 Earth days/ you/ it/ for/ Mercury/ that/ takes/ the Sun/ orbit/ once/ to?

A. Do you know that it takes 88 Earth days for Mercury to orbit the Sun once?

B. Do you know that 88 Earth days takes it for Mercury to orbit the Sun once?

C. Do you know that Mercury takes 88 Earth days for it to orbit the Sun once?

D. Do you know that it takes to orbit 88 Earth days for Mercury the Sun once?

Like all other planets in the solar system, Earth orbits …………the Sun. And it does do at some serious speed- around 30 kilometers per second, in fact! It takes 365 days (one year) for Earth to complete one full orbit.

            A. around                    B. along                                  C. outside                    D. on

Mercury is the smallest member of the sun's family. It is only 3.100 miles across. It is also the sun's swiftest planet. Its yearly journey round the sun is only 85 days.

Mercury always keeps one side towards the sun. On this side it is always day, on the other side always night. We only see the lighted side.

Mercury appears to us like a yellowish orange star. The nearest planet to the sun, it is always seen near the sun, either just before sunrise or soon after sunset. People sometimes call mercury the morning star or evening star.

Mercury is half the size of the earth. Because it is much lighter, it has much less gravity. If you can visit Mercury in a spaceship, you will find it a strange world. Its low gravity makes you feel very light. If your weight on earth is 100 pounds, your weight on Mercury is only 27 pounds. Looking at the sun from Mercury, you can see that it's much more brilliant than it is seen from the earth. And the yellow centre of the sun appears three times bigger from Mercury.

On its lighted side, Mercury's temperature is about 300 degrees centigrate. But the dark side is extremely cold, but 150 degrees below zero so mercury is probably the coldest as well as the hottest of the planets.

21. A. Mercury is .......

A. the sun's fastest planet B. the coldest planet

C. the hottest planet D. all are correct

22. We cannot see the dark side of Mercury because .......

A. it moves very fast.

B. it always appears just before sunrise or soon after sunset.

C. it always keeps one side towards the sun.

D. it is too far for us to see.

23. When can we see Mercury? - We can see it ......

A. just before the sunset

B. just before sunrise

C. after the sunset

D. both A and C are correct

24. Why do we weigh much on the earth than on Mercury? - Because .......

A. Mercury is nearer to the sun. B. Mercury has got less gravity than the earth.

C. Mercury is much hotter. D. none are correct.

25. Why does the sun look bigger when it is seen from Mercury?

- Because .......

A. Mercury is the smallest planet of the sun.

B. Mercury is nearer to the sun.

C. Mercury is a light planet.

D. It only takes Mercury 88 days to move round the sun.

Chọn đáp án và giải thích chi tiết

Chọn đáp án đúng:

Virtually any night of the year, a person can look up at the sky and see the moon. The moon is Earth’s only natural satellite. It takes slightly more than twenty-seven days for it to orbit Earth. And it does so from a little more than 380,000 kilometers away. Despite being Earth’s closest celestial neighbor, there is much about the moon that scientists do not know.
   For instance, no one is exactly sure when the moon was formed. Earth is (estimated) to have been created around 4.5 billion years ago. No later than 100,000 years after that, the moon was in orbit around Earth. Yet the remains: How did the moon form? There are several theories, but astronomers have thus far failed to prove any of them correct. The most widely accepted idea is the collision theory. It states that the moon formed when an object (crashed into) Earth. According to this hypothesis, when Earth was first created, it had no satellite. But, at some point in time, an object approximately the size of Mars collided with Earth. This caused part of the planet to break off. The largest part eventually transformed into the moon. Another theory is that Earth and the moon formed at the exact same time billions of years ago. However, many astronomers discount this theory. They point out that Earth and the moon are comprised of different substances. They claim that if the two bodies were formed at the same time, then they should be composed of the same materials. Yet, as an example of their differences, the moon has less iron than Earth does. A third theory proposes that the moon formed somewhere else in the solar system. As it wandered past Earth, it was captured by Earth’s gravity and began to orbit the planet. A fourth theory declares that, when (it) first formed, Earth spun much more rapidly than it does at the present time. Due to its swift rotation, part of the crust was stripped away from the planet and cast into space. This material then formed the moon. 

   Each of the theories has its supporters and detractors. Thus far, however, no astronomer has been able to prove one theory while disapproving all of the others.

36.What would be the best title for the passage?
A. How Long Ago Did the Moon Form?
B. Theories on the Creation of the Moon
C. The Moon: Everything You Need to Know about It
D. The Changing Phases of the Moon
37.Which of the following statements does paragraph 1 support?
A. The moon is always visible in the night sky.
B. The moon spends no more than twenty-seven days orbiting Earth.
C. The moon’s distance from Earth changes at times.
D. No natural objects are closer to Earth than the moon.

38.The word (estimated) in the second paragraph is closest in meaning to _____.
A. presumed    B. known    C. determined    D. thought
39.The phrase (crashed into) in the second paragraph is closest in meaning to _____.
A. passed    B. hit    C. interfered with    D. affected
40.Which of the following is true regarding the collision theory?
A. It declares that Mars collided with Earth at one point.
B. It points out that Earth’s orbit changed a great deal.
C. It is believed by the greatest number of astronomers.
D. It states that Earth once had multiple satellites.
41.Why do many astronomers doubt that Earth and the moon formed at the same time?
A. Earth and the moon are formed of different materials.
B. The moon more likely came elsewhere in the solar system.
C. There is not enough iron in the Earth’s crust.
D. The chances of two objects forming close together are small.
42.The word it in the passage refers to _____.
A. a fourth theory            B. the planet’s gravity
C. Earth                          D. the Solar System

   Each of the theories has its supporters and detractors. Thus far, however, no astronomer has been able to prove one theory while disapproving all of the others.

IV. Read the passage and choose the correct answer (A, B, C or D).

Earth, our beautiful home planet, is the only astronomical object to accommodate life (23) . . . . . we know it. Scientists believe Earth was (24) . . . . . approximately 4.5 billion years ago. It is the fifth-largest (25) . . . . . in our solar system. Its equatorial diameter is about 12,074 kilometres. Earth is the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kilometres. It (26) . . . . 365,3 days for Earth to obit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 580C. Nearly 70 percent of Earth's surface is covered by ocean, (27) . . . . has an average depth of about 4 kilometres. In 2015 it was estimated that 7,3 billion humans are living on Earth.

23. A. as B. so C. because D. that

24. A. find B. formed C. found D. built

25. A. system B. planet C. star D. sun

26. A. has B. takes C. gets D. begins

27. A. what B. that C. which D. where

Read the passage and choose the correct answer (A, B, C or D).

Earth, our beautiful home planet, is the only astronomical object to accommodate life (23) . . . . . we know it. Scientists believe Earth was (24) . . . . . approximately 4.5 billion years ago. It is the fifth-largest (25) . . . . . in our solar system. Its equatorial diameter is about 12,074 kilometres. Earth is the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kilometres. It (26) . . . . 365,3 days for Earth to obit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 58°

C. Nearly 70 percent of Earth’s surface is covered by ocean, (27) . . . . has an average depth of about 4 kilometres. In 2015 it was estimated that 7,3 billion humans are living on Earth.

Question 24:

A. find

B. formed

C. found

D. built

Read the passage and choose the correct answer (A, B, C or D).

Earth, our beautiful home planet, is the only astronomical object to accommodate life (23) . . . . . we know it. Scientists believe Earth was (24) . . . . . approximately 4.5 billion years ago. It is the fifth-largest (25) . . . . . in our solar system. Its equatorial diameter is about 12,074 kilometres. Earth is the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kilometres. It (26) . . . . 365,3 days for Earth to obit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 58° C. Nearly 70 percent of Earth’s surface is covered by ocean, (27) . . . . has an average depth of about 4 kilometres. In 2015 it was estimated that 7,3 billion humans are living on Earth.

Quesstion 23:

A. as

B. so

C. because

D. that

Read the passage and choose the correct answer (A, B, C or D).

Earth, our beautiful home planet, is the only astronomical object to accommodate life (23) . . . . . we know it. Scientists believe Earth was (24) . . . . . approximately 4.5 billion years ago. It is the fifth-largest (25) . . . . . in our solar system. Its equatorial diameter is about 12,074 kilometres. Earth is the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kilometres. It (26) . . . . 365,3 days for Earth to obit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 58° C. Nearly 70 percent of Earth’s surface is covered by ocean, (27) . . . . has an average depth of about 4 kilometres. In 2015 it was estimated that 7,3 billion humans are living on Earth.
Question 26:

A. has

B. takes

C. gets

D. begins