强度等级C30混凝土用石子含泥量应不大于（）%泥块含量应不大于（）%.
A、2.00.5
B、2.00.7
C、1.00.5
D、1.00.7
参考答案：C
His book is wonderful. I ______ it for three times.
A．read
B．have read
C．am reading
D．will read
连词成句，注意标点符号。
l.his, here, is, photo, family, (.)
________________________________________ .
2.your, the, for, of, thanks, photo, family, (.)
3.your, is, brother, Paul, (?)
________________________________________ ?
4.are, not, these, grandparents, his, (.)
5.she, aunt, his, is, (?)
