钢结构厂房施工时所用的多孔砖的尺寸一般为()毫米。
A、240×105×90
B、190×190×90
C、240×115×90
参考答案:A
The task ______ more difficult than we'd thought. [ ]
A. proved to be
B. was proved to be
C. proved being
D. proved was
请为农村某5岁男童做出合理的膳食安排。
为解决蛋白质问题,每天至少食用()。
A.牛奶200mL
B.牛奶300mL
C.大豆制品15g
D.大豆制品20g
E.大豆制品25g