A:a; the
B:an; /
C:a; /
奥斯特洛夫斯基说:“谁若与集体脱离,谁的命运就要悲哀,集体什么时候都能提高你并且使你两脚站稳。”这句话说明( )
长方形的长为6厘米,宽为4厘米,若绕着它的宽旋转一周得到的圆柱的体积为( )立方厘米.
看图,给下列图片选择合适的句子或对话。
① ____ A. I have a new dress.
② ____ B. Look at my sweater. It's nice.
③ ____ C. My trousers are too long.
④ ____D. Look at his shirt. It's nice.
⑤ ____ E. In winter, I need a warm coat.
实验编号
A
B
C
D
实验操作