王老师买60本一样的故事书,付出250元,找回28元,每本图书多少钱?
(250-28)÷60
=222÷60,
=3.7(元).
答:每本图书3.7元.
—Do you have a printer? I’d like my papers______ at once.
—Yes. and it______ very quickly and clearly. [ ]
A. to print out; will be printed
B. to print out; prints
C. printed out; prints
D. printed out; is printed
在膨胀岩土地区进行铁路选线时,以下哪条不符合选线原则()
A.线路宜在地面平整、植被良好的地段采用浅挖低填方式通过
B.线路宜沿山前斜坡及不同地貌单元的结合带通过
C.线路宜避开地层呈多元结构或有软弱夹层的地段
D.线路宜绕避地下水发育的膨胀岩土地段