Ⅱ.阅读理解
A
We use bricks(砖) to make houses on the Earth, but what about building things on the Moon? Well, you use "lunar bricks", of course!
Scientists at the Huazhong University of Science and Technology (HUST) have developed "lunar bricks". They hope to use the bricks to build a base(基地) on the Moon.
To make the bricks, the scientists used a lunar soil simulant(模拟月壤). The bricks are three times stronger than normal concrete(混凝土) bricks or red bricks. They also have mortise and tenon joint structures(榫卯结构), which were used in ancient Chinese buildings. This makes it possible to simply put these bricks together, just like Lego.
Professor Zhou Cheng from HUST told Xinhua that they had tested five different kinds of simulated(模拟的) lunar soil and used three ways to harden them. This helped them choose the best materials for making the bricks. Lunar soil isn't the same everywhere on the Moon, Zhou added. For example, one of the kinds tested simulates the lunar soil at the landing site of Chang'e-5, which is mainly basalt(玄武岩).
The lunar bricks need to be tested well before being used because the Moon has an extreme(极端的) environment. Moonquakes(月震) often happen there, and cosmic radiation(宇宙辐射) is high. It gets as hot as 180°C during the day and as cold as -190°C at night.
The lunar bricks will be sent to China's space station on the Tianzhou-8 spacecraft. There, scientists will check how well the bricks do in space.
The first brick is expected to return to the Earth by the end of 2025. China hopes to build a lunar research station between 2028 and 2035.
(
B
) 1. The lunar bricks are developed to ______.
A. study the lunar soil
B. build a base on the Moon
C. test the weather on the Moon
D. create stronger building materials on the Earth
(
D
) 2. How do the mortise and tenon joint structures help with lunar bricks?
A. They make the bricks lighter.
B. They make the bricks look good.
C. They help save lunar soil simulant.
D. They make the building process easier.
(
C
) 3. Why was it necessary for the researchers to test different kinds of lunar soil simulant?
A. They wanted to find the best basalt for the bricks. B. They wanted to find materials.
C. The soil on the Moon changes from place to place.
D. The simulant is different from real lunar soil.
(
A
) 4. What is paragraph 5 mainly about?
A. Why lunar bricks need to be tested.
B. How the lunar bricks were made.C. What the weather is like on the Moon.
D. How the lunar bricks were tested.
(
C
) 5. What can we learn about the lunar bricks from the passage?
A. Scientists are still unhappy with the bricks.
B. A base built by lunar bricks was made on the Earth.
C. They will be tested in China's space station.
D. They will soon be used to build a lunar research station.
