题目

在制作真核细胞模型时，需要选择合适的材料来模拟细胞的各结构，下列模拟核糖体的最合适材料是 A．月饼礼盒 B．大米 C．装有水的保鲜袋 D．彩纸折叠成的网状物 答案：B--- I will be able to come to see your __________ at 8:30 tomorrow evening. --- I’m sorry, by then it __________ and I will be meeting reporters in the meeting room.A．performer; will be endedB．performance; will have endedC．performing; is to endD．perform; will be ended