触式橄榄球中换人时应()。
A.等待裁判暂停比赛
B.场下队员先上,场上队员再下
C.场上场下队员同时移动
D.场上队员先下,场下队员再上
参考答案:D
Though my sister often makes me ______, she was made ______ by me today. [ ]
A. cry; crying
B. crying; crying
C. cry; to cry
小企业客户信用等级的类别分为()。
A、二类九级
B、二类六级
C、三类九级
D、三类六级