Answers to Lesson 13, Volume 1, Chinese Classroom Exercise Book for Grade Six.

1 Yes 1, and then combine the words.

Lucky (happiness), forget (forget) to give (gift), roam (experience)

Xin (hard) Hope (hope) Tired (tired) Distant (remote) path (secluded path)

2 Change the dotted words into words with similar meanings.

(1) Looking at the earth from a distance in the sky, there are blue and white lines (traces) on this water-blue crystal sphere.

(2) If the mining is not controlled (economized), the mineral resources on the earth will be exhausted at an accelerated rate.

(3) Humans cannot expect (hope) to move to other planets after destroying the earth.

Combine the following words into four words, and then choose one or two to write.

Resettlement of exhausted mining of mineral disaster resources in ecological base.

The mining of mineral resources in the ecological disaster resettlement base has dried up.

Due to ecological disasters and resource depletion, the future earth is no longer suitable for human survival. At that time, people set up immigration bases and factories to mine minerals on some planets. ...

Complete the following sentences and make sentences with dotted words.

(1) Our earth is so lovely and fragile at the same time!

Xiao Min is not only a labor committee member of our class, but also a representative of math class.

(2) If mining is not controlled, it will accelerate the depletion of mineral resources on the earth.

If human beings continue to waste and pollute like this, the resources of the earth will be exhausted one day.

Read the text silently and complete the exercise.

(1) The text introduces the earth from three aspects: ① the smallness of the earth; ② Limited earth resources; Humans cannot migrate to other planets.

(2) The text adopts column number interpretation method. What figures impressed you? Please extract relevant sentences and write down your feelings.

Excerpt: 1. It is a planet with a radius of only over 6,300 kilometers. Scientists have proved that there is no second planet suitable for human habitation at least within 40 trillion kilometers centered on the earth.

Feeling: 1 and the number of "more than 6,300 kilometers" highlight that the earth is very small in the vast universe. The figure of "40 trillion kilometers" highlights that the earth is unique and we must protect it.

Read the passage and complete the exercise.

Read the passage and complete the exercise.

Some people will say, isn't there a lot of space? There are countless planets there. When the earth's resources are exhausted, can't we move to other planets?

Scientists have proved (at least) that there is no second planet suitable for human habitation within 40 trillion kilometers centered on the earth. Humans can't (expect) to move to other planets after destroying the earth.

Yes, scientists have put forward many ideas, for example, building an immigration base on Mars or the moon. (But), even if these ideas can be realized, it is still a distant thing. How many people can live (besides)?