如图,用一平面竖直地去截放在桌面上的圆柱,下列结论正确的有( )个.① 截面呈正方形 ② AD∥BC,AB∥CD ③ AB⊥BC,AD⊥AB ④ AD=BC,AB=CD
A:一
B:二
C:三
D:四
She looked at his fingers with wonder as they turned each page and suddenly reached for his hand. She was amazed by his and the softness and warmth of his skin.
选词填空。
酬劳 酬谢
①这件事情办完以后,我一定要好好____他。
②经过努力,他终于得到了应得的____。
读“中国土地利用类型比重图”,回答问题
下列关于地球大小的数据,错误的是( )