问题
单项选择题
气中下列哪些气体含量过高会引起温室效应（）
A、烟尘
B、二氧化碳
C、二氧化硫
D、一氧化碳
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
气中下列哪些气体含量过高会引起温室效应（）
A、烟尘
B、二氧化碳
C、二氧化硫
D、一氧化碳
参考答案：B
| 用方框中所给单词或短语的适当形式填空。 | |
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