At the end of the text, the author uses trees as an example to show that _____.
A: a clean environment is very important to us
B: everything in the world is precious
C: change takes place very fast
D: change takes place very slowly
A: a clean environment is very important to us
B: everything in the world is precious
C: change takes place very fast
D: change takes place very slowly
举一反三
- At the end of the text, the author uses trees as an example to show that _____.
- The world is changing very fast; our plan must change ______.
- The new appointment of our president ________ from the very beginning of next semester. A: takes effect B: takes part C: takes place D: take turns
- 中国大学MOOC: Evolution can be defined as _____ change that takes place in a(n) _____.
- Is 3-D printing fast? A: No, it takes a long time. B: Yes, it works very quickly.