Helium is not flammable and, next to hydrogen, is ______

admin2013-04-25 20

问题 Helium is not flammable and, next to hydrogen, is ______

选项 A、known the lightest gas
B、lightest the known gas
C、the lightest gas known
D、the known gas lightest

答案C

解析

转载请注明原文地址:https://kaotiyun.com/show/rzfO777K

托福（TOEFL）

相关试题推荐

随机试题

最新回复(0)