A:茕茕孑立 翠锦斑斓 残羹冷炙 昙花一现
B:不稂不莠一见钟情与时具进抱残守缺
C:玲珑剔透瞠目结舌截然相反历尽苍桑
D:完璧归赵言简意赅怡笑大方走头无路
She did what she could _______ us. Though 3,000 dollars is a lot of money for her.
起重机的钢绳将500N的物体匀速提高6m后,又水平匀速移动4m,钢绳对物体所做的功为( )
下列各句中,没有语病的一句是( )