()是现代中国保守主义的创始人。
A.李鸿章
B.康有为
C.梁启超
D.张之洞
参考答案:D
If he can ____________ a little longer,we can get help for him. [ ]
A.hold up
B.hold on
C.keep up
D.keep on
干喷法较湿喷法能降低回弹和粉尘,提高喷混凝土质量。()