皮皮学，免费搜题
登录
搜题
【简答题】
下列说法你认为不合理的是（ ） A．使用一次性筷子，即方便又卫生，且消耗木材不多，应提倡大量使用 B．塑料像把双刃剑，它即可极大方便人们的生活，又给环境带来污染 C．甲烷是优良的气体燃料，但矿井里由于它的存在，在通风不良时，易发生爆炸 D．空气中的二氧化碳能促进植物的光合作用，但含量过高，容易造成温室效应
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】无关项代表哪两种情况?
【单选题】According to the third paragraph, which is true about water?
A.
There is no such thing as water shortage in the world at all.
B.
It can be recycled in the form. of rain, snow or evaporation.
C.
Less than a tenth of water is extracted for human use each year.
D.
Only what falls as rain and snow can be made full use of.
【单选题】听力原文： What happened to me that day is just unbelievable. The first thing to go wrong was that all the parking spaces were taken. So I had to park on the grass, and hoped that I would not get a parking...
A.
A student.
B.
A teacher.
C.
An officer clerk.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
