【单选题】The rescuers _______ to work as soon as they arrived at the spot of the accident.
【单选题】It's been very cold the last few days. I think the winter's ______ already.
【单选题】执行如下程序,最后S的显示值为SET TALK OFF s=0 i=5 x=11 DO WHILE s<=x s=s+i i=i+1 ENDDO ?s SET TALK ON
【简答题】已知三点A(a,2) B(5,1) C(-4,2a)在同一条直线上, 则a= .
【多选题】复合材料中按增强相体类型可分为( )复合材料三大类。
【简答题】读句子,猜猜他们是谁? ( )1. It is red and big. ( )2. I go to school with(和……一起)it.