中国大学MOOC: Ion can be accumulated against concentration due to
举一反三
- 中国大学MOOC: If a place lost its tranquility due to the over-development of tourism, we can describe the place as ______.
- The formation of human body current is mainly due to ( ). A: Potassium ion B: Sodium ion C: Potassium and sodium ions D: Calcium ion
- 中国大学MOOC: If we want to show that there is a problem against a certain research background, we can use
- 中国大学MOOC: Doctors are racing against time to o________ the treatment so that they can save more patients. (--to make something as good as it can be)
- 中国大学MOOC: It is time to bring in new laws against drunk driving so that _________ people can be better protected.