pH小于7表示水呈()。
A.中性
B.酸性
C.碱性
D.弱酸性
参考答案:B
I was so tired after a day of hard work that I could ______ move any longer.
A.really
B.nearly
C.highly
D.hardly
对于出租的房产,以房产租金收入为计算依据。以租金收入的( )计征。
A.10%
B.12%
C.8.5%
D.6%