【单选题】车辆识别代码“VIN”是由()位数字和字母组成。
【单选题】古代河南简称“豫州”,说明当时这个地方有大象分布,表明当时的气候比现在:
【单选题】I am sure Tom has been here and has done ______.
B.
which was required of him
C.
what was required of him
D.
what has been required him
【单选题】In the last paragraph, people are recommended to have ______.
A.
foods containing large quantities of refined flour and vegetables
B.
foods with fibers removed
C.
foods with more fibers
【单选题】作业人员定期健康检查属于哪一级预防()。
【单选题】Yesterday when I was playing in Century Park, I came across Mr Li, our physics teacher. The underlined part means ______. [ ]
【单选题】车辆识别代码( VIN )是由( )位数字字母组成的?
【单选题】. — I ‘ll ask our physics teacher to explain Newton’s Second Law of Motion, which she taught us yesterday. — That’s just _______ most of the students haven’t understood.