______ water is there in the glass? [ ]
A. How many
B. How much
C. Whose
D. What
答案:B
people in the world are suffering from the H1N1 flu.
A.Several thousands of
B.Ten thousands
C.Thousands of
D.Thousands
臭阈值法检验水中臭时,其检验人员的嗅觉敏感程度可用()或()测试。