更多"Questions 9 to 12 are based on the "的相关试题:
[单项选择]Questions 9 to 11 are based on the conversation you have just heard.
A. England.
B. Scandinavia
C. South America
D. Scotland
[单项选择]Questions 9 to 12 are based on the conversation you have just heard.
A. To produce a gas containing carbon and hydrogen.
B. To remove impurities from methanol.
C. To heat the reactors.
D. To prevent dangerous gases from forming.