____ deep down in the earth，the dead forests rotted away and became coal.

Could mother Earth feel sharp pain when herdsmen settled down one place?

中国大学MOOC: _______ deep down in the earth for thousands of years, the dead forest has rotted away and become coal.

The essence of the scientific research spirit is down-to-earth and truth-seeking.

中国大学MOOC: Which of the following transitional signal is the most appropriate for the sentence below?In physics, the weight of an object is the gravitational force with which Earth attracts it; __________, if a man weighs 150 pounds, this means that Earth pulls him down with a force of 150 pounds.

Theword“down-to-earth”(Para.3)mostprobablymeans_____. A: changeable B: expensive C: reasonable D: fixed

Which of the following transitional signal is the most appropriate for the sentence below?In physics, the weight of an object is the gravitational force with which Earth attracts it; __________, if a man weighs 150 pounds, this means that Earth pulls him down with a force of 150 pounds. A: for example B: moreover C: therefore D: because

_______ deep down in the earth for thousands of years, the dead forest has rotted away and become coal. A: Buried B: Burying C: Having buried D: Having been buried

The spirit of scientific research is a spirit that researchers uphold in scientific research, and its essence is "down to earth, ()". A: Thick and thin B: Truth-seeking C: Take advantage of the shortcomings D: Cooperation

_____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface