Half of those books ______ best-sellers.
A. is
B. are
C. am
D. was
My brother's room is ______ mine.
A. twice the size of
B. as twice the size
C. as twice as
D. twice the size as
以下哪个项目在药品说明书中可以不写
A. 药品名称
B. 药理毒理
C. 药物相互作用
D. 老年患者用药
E. 孕妇及哺乳期妇女用药
下列药品有效期的写法正确的是
A. 有效期至2005年3月
B. 有效期至2005-3
C. 有效期至05/3
D. 有效期至2005-03
E. 有效期至05/03