一定条件下,将等体积的NO和O2一同置于试管中,并将试管倒立于水中,充分反应后剩余气体约为原总体积的[ ]
A.1/8
B.1/4
C.3/8
D.3/4
答案:A
Limited natural resources should be made full use of ______ the ______ need of energy. [ ]
A. meeting;increasing
B. to meet;increased
C. meeting;increased
D. to meet;increasing
“子为王,母为虏,终日舂薄暮,常与死为伍。”这首《舂歌》出自汉代一位宠妃之手。请问是哪位宠妃?