中国大学MOOC: The atmosphere of Mars consists mostly of ______.
举一反三
- The atmosphere of Mars consists mostly of ______. A: oxygen B: carbon dioxde C: helium D: nitrous oxide
- 中国大学MOOC: Mars is the _____ planet from the Sun.
- 中国大学MOOC: The word __________ means to transform Mars into something earthlike.
- 中国大学MOOC: To the Christians, it consists of two parts, the ___________ and the __________.
- 中国大学MOOC: Language consists of the systems of sounds and grammar.