防水混凝土浇筑高度一般不超过( )m，否则应用串筒和溜槽，或侧壁开孔的办法浇捣。
A．1.5B．2.5C．3.5D．5.5
参考答案：A
So _______ that everybody wants to take a photo with him.
A．a wellknown man he is
B．wellknown he is a man
C．a wellknown man is he
D．wellknown a man is he
口诀乘法在哪个国家是必修的项目（）
A、美国
B、德国
C、法国
D、中国
