【简答题】第三单元我们学习了说明文,请列举出4种我们在本单元学到的说明方法。
【单选题】A helicopter is able to and land straight up or down.
【简答题】请将科学家与相应的研究成果用线连起来 林奈----提出“生物学” 达尔----文生物分类系统 哈维----物种起源与生物进化 拉马克----血液循环 沃森和克里克----DNA分子双螺旋结构.
【单选题】Hurry up! The plane will ______. [ ]
【单选题】–Take away your balls, they _____ the whole room. -Ok, Mum.
【单选题】Matter is anything____
A.
that take up space and have weight
B.
which take up space and have weight
C.
that takes up space and has weight
D.
those take up space and have weight
【单选题】采用定量订货方式必须预先确定( )和订货物量。