新生儿呼吸窘迫综合征生后几天内死亡者最多()
A.1天
B.2天
C.3天
D.5天
E.7天
参考答案:C
Uncle Martin held a yard sale. But ______ one came because the weather was so bad. [ ]
A. some
B. every
C. any
D. no
建筑石灰的特性与技术要求包括( )。 ①可塑性好;②硬化缓慢;③耐水性差;④硬化后强度高;⑤硬化时体积收缩小;
A.①④⑤
B.③④⑤
C.②④⑤
D.①②③