生活中,有人用眼睛看,更有人用耳朵“看”,因为声音向我们传递着很多信息.一位有经验的锅炉工发现,向瓶里灌开水,开始时,水的落差大,撞击力大,瓶里空气多,发出大声的并且低沉的“咚、咚”声,水将满时情况相反,发出小声的并且尖细的“吱、吱”声,则该工人判断灌水多少的依据是( )
Allen, shall we go to the bookstore this afternoon?
I'm sorry, David, but I ______________meet my cousin at the train station.( )
A.have toB.canC.mayD.could
"My People, My Country" is __________movie I've ever seen.( )
A.more educationalB.the most educational
C.educationalD.less educational
In Chinese families, people won't start dinner ___________the elders take their seats.( )
A.afterB.whenC.becauseD.until
Teachers expect all their students ___________progress day by day.( )
A.to makeB.makeC.to takeD.take
Is this hat_______________?
No, the red one is_________.( )
A.Lucy's; herB.Lucy; her
C.Lucy's; hersD.Lucy; hers