对脑血管具有较强扩张作用的钙离子通道阻断药是（）
A.维拉帕米
B.硝苯地平
C.尼莫地平
D.地尔硫桌
E.加洛帕米
参考答案：C
— My God! I haven't prepared the files for the new project yet!
— _____. The boss won't need it until next Friday. [ ]
A. There's no doubt
B. There's no panic
C. Good luck
D. Sounds good
There ______ a number of students in our school. The number of the students ______ more than 7000.
A．is, are
B．are, is
C．is, is
D．are, are
