He can’t have gone out, ______ the light is still on.
A. because
B. since
C. as
D. for
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_____ John was watching TV, his wife was cooking.
As
B. As soon as
C. While
D. Till
Read it aloud _____ the class can hear you.
A. so that
B. if
C. when
D. although
Translate the following sentences into English.(将下列句子翻译成英文。)1. 当他们还在说笑的时候,老师进来了。__________________________________________________________2. 回家之前我必须干完所有的活。__________________________________________________________3. 不论到什么地方,都要把工作做好。__________________________________________________________由于他累了,所以他很早就上了床。__________________________________________________________5. 为了能及时赶到,我们起得很早。___________________________________________________________________
在进行钢筋混凝土矩形截面双筋梁正截面承载力计算中,若' 2sax,则说明
A. 受压钢筋配置过多
B. 受压钢筋配置过少
C. 梁发生破坏时受压钢筋早已屈服
D. 截面尺寸过大