题目内容：
[A] Lightning and thtmder, [B] Warm air and cold air.
[C] A great deal of water vapor and a rapidly rising air current.
[D] A great amount of vapor and electricity.
参考答案：
答案解析：
单选题：[A] Lightning and thtmder, [B] Warm air and cold air. [C] A
- 题目分类：英语四级
- 题目类型：单选题
- 查看权限：VIP
[B] Warm air and cold air.
[C] A great deal of water vapor and a rapidly rising air current.
[D] A great amount of vapor and electricity.