“合同协议号”栏:( )。
A.8ET74
B.GUK -6
C.028320742
D.J898508
参考答案:A
Those who put their money away in the bank know very well that interest rate could go ______.
A.both ways
B.all ways
C.neither way
D.either way
污水中含有大量的(),是污水处理的主要对象。
A.无机物
B.有机物
C.化合物
D.杂物