据有关国际文献的资料统计,建设工程项目( )的费用增加与信息交流存在的问题有关。
A.10%~20%B.10%~30%C.20%~40%D.20%~50%
参考答案:B
方程x2=4x的解是 .
—I can’t stand him ________ all the time.
—Is that why you refused ________ to him?
A.interrupting; speaking
B.interrupting; to speak
C.to interrupt; to speak
D.to interrupt; speaking