下列算式中,商比被除数大的是( ) [ ]
A.3.4÷3.4
B.3.4÷0.05
C.3.4÷2.5
答案:B
下列何者为促成浪费的主要因素()
A.负荷过重
B.生产过剩
C.多余的加工处理
D.等待信息
This new kind of chemicals will help keep the air, soil and water________ from pollution.
A.free
B.empty
C.loose
D.short