通常浸麦度要控制在（）
A.30-35%
B.43-48%
C.35-40%
D.50-55%
参考答案：B
3.26×2.8的积是______位小数，5.24的1.02倍得数保留一位小数是______．
Tom told the boss of his company that he ______ born in 1956.[ ]
A. was
B. had been
C. is
D. has been
