【简答题】There are two maps on the wall: one is a map of China, and ______ is a map of the world. A) other B) another C) the other D) the others
【单选题】影响气体混合物爆炸极限的主要因素有:温度、压力、()和着火源等。
【单选题】当利用仰角拍摄人像时,观众的视觉习惯一般放置在____。
【单选题】-What's this in English? --______