题目内容：

    The moon may shine white above us most nights of the year, but how much do we know about Earth’s neighbor and what lies beneath its surface? Scientists are aiming to find out.

On Jan 3, 2019, China’s Change 4 spacecraft landed on the far side of the moon a first for humanity. It released a small probe（探测器）,Yutu 2, or Jade Rabbit 2, which began to search beneath the moon’s surface using Lunar Penetrating Radar（探测雷达）. These radio signals can reach 40 meters underground, three times the depth of the Chang’e 3 lunar probe launched in 2013 for the near side of the moon, China Daily reported.

In a study published in the journal Science Advances, researchers found that the lunar soil’s top layer on the far side of the moon was much thicker than expected ﹣ about 40 meters. Other scientists only expected about 6 millimeters of soil based on NASA observations during the Apollo moon landings, according to The New York Times.

“It’s a fine, dusty, sandy environment, said one of the authors of the study, Elena Pettinelli, a physics and mathematics professor at Rome Tre University, Rome.

Yutu 2 is specifically exploring the Von Karman crater（大坑）,a large hole that’s 180kilometers wide and also the landing site of Chang’e 4. It’s part of an even larger, older crater spanning more than 1,770 kilometers.

“The subsurface at the Chang’e 4 landing site is very complex,” said Li Chunlai, a research professor and deputy director﹣general of National Astronomical Observatories of the Chinese Academy of Sciences. Observations suggest that the subsurface material is totally different than the previous landing site of Chang’e 3, she said.

Radar waves revealed various layers beneath the moon’s surface: grainy（ 颗粒状的）material, boulders（岩石）,and further layers of fine and coarse（粗糙的）particles. This information is helping scientists to gain new understanding of the moon’s history and formation, as well as volcanic activity and lunar impacts.

Yutu 2 is the longest﹣working rover（巡视器）on the moon, but it won’t last forever. China plans to launch the Chang’e 5 probe later this year, Xinhua News Agency reported. The spacecraft is expected to bring pieces of the moon back to Earth for closer study.

1.What can we learn about the Chang’e 4 probe?

A.It was the first to land on the moon’s near side.

B.It explored areas as wide as 1,770 kilometers.

C.Its signals could reach 40 meters beneath the moon’s surface.

D.It is three times as large as the Change 3 lunar probe.

2.What does the lunar soil’s top layer on the moon’s far side look like, according to the text?

A.It looks like a large hole.

B.It is about 6 millimeters thick.

C.It goes farther down than expected.

D.It is covered by boulders and fine and coarse particles.

3.According to the passage, why is the Chang’e 4 probe exploration is important?

A.It observed material beneath the moon’s surface which is helping scientists to know the moon better.

B.It has offered us relevant information on the near side of the moon.

C.It told scientists the landing site is very complex.

D.It revealed the surface material on the moon which is helpful to know the moon’s activity and impact.

4.What is the Chang’e 5 probe expected to do?

A.Explore the Von Karman crater.

B.Replace Yutu 2 to explore the moon.

C.Identify the moon’s various layers.

D.Bring lunar samples back to the Earth.

5.What is the text mainly about?

A.A history of Chinese lunar missions.

B.How Yutu 2 explored beneath the moon’s surface.

C.report on the Chang’e 4 probe’s findings.

D.A comparison of the Change 3 and 4 probes.