Many students in our school _______ the old and they usually offer their seats to them on buses.
A:worry about
B:care for
C:agree with
D:take care
如图所示,弹簧秤的示数各为多少?
一艘货轮在泰国的某港口装船外运,装船的货物最有可能的是( )
读“黄河水系示意图”回答下列问题。