施工企业技术标准编制征求意见的期限通常不少于()天。
A.10
B.15
C.25
D.30
参考答案:D
从贞观年间开始,日本来中国的遣唐使有[ ]
A.10多批
B.11多批
C.12多批
D.13多批
David's brother is a teacher. He works in a _____ . [ ]
A. factory
B. hospital
C. university
D. hotel