I will call you up _______I get to Beijing. [ ]
A. as
B. since
C. though
D. as soon as
答案:D
买3本练习本和2本笔记本一共要11.6元,每本笔记本比练习本贵2.8元.每本笔记本______元,每本练习本______.
浇铸大断面的板坯,一般选用()连铸机。
A.全弧形
B.水平式
C.立弯式
D.椭圆形