某药的半衰期为8小时,一次给药后药物在体内基本消除的时间是()
A.1天
B.2天
C.4天
D.6天
E.8天
参考答案:B
— How many students are there in your school?
— There are about two students. [ ]
A. thousand
B. thousands
C. thousands of
D. thousand of
纬面缎纹读作()↗读作()。