依法治国是社会文明进步的重要标志，是治理国家的基本方略。依法治国的前提是[ ]
A．有法必依
B．有法可依
C．执法必严
D．违法必究
答案：B
The fact __ in the past few years proves that out Party’s policy is correct.
A．that great achievement was made
B．which great achievement were made
C．what great achievement have been made
D．that great achievement have been made
砌块砌筑时，砌体水平灰缝的砂浆饱满度，应按净面积计算不得低于______。
A．70% B．75% C．80% D．90%
