世界上信徒最多的宗教人数超过10亿,它是[ ]
A.印度教
B.伊斯兰教
C.基督教
D.佛教
答案:C
With a school built in the village, the children needn't climb______ the mountain for study.
A.over
B.at
C.for
D.in
空气呼吸器适用于什么场所?