【单选题】在下列给出的表达式中,与while(E)中的(E)不等价的表达式是
【单选题】He began to play a tune. It was a nice ______.
【简答题】The pianist waited for silence a while _______ he began to play the violin. A.until B.when C.after D.before
【简答题】我国出口商出售一批货物给外国进口商,合同规定的支付方式是50%货款凭不可撤销信用证见票后30.天付款,其余50%凭即期付款交单。我出口商委托当地银行转托进口国A银行凭单据向进口商收取货款,同时凭进口商通过A银行开立的以我出口商为受益人的见票后30天付款的信用证开出了50%价款的汇票。其后,A银行根据进口商按即期付款交单支付的50%货款将全部货运单据交给了进口商,并将代收的50%货款拨付给了出口商所...
【单选题】How old was the man when he began to play as a pitcher?