— Happy New year!
— ________.
[ ]
A. Thank you
B. The same to you
C. Yes
D. Sure
答案:B
世界人群中最常见的贫血是
A.缺铁性贫血B.巨幼细胞性贫血C.再生障碍性贫血D.溶血性贫血E.海洋性贫血
密封油箱的作用是什么?