下面()服务Internet上没有。
A.网上商店
B.网上图书馆
C.网上桑拿浴
D.网上医院
参考答案:C
I accepted a _____ teaching students ages 6 to 12 with severe learning and behavioral ____ who’d moved from school to school.
A.position; difficulties
B.post; hard
C.job; troubles
D.occupation; difficulty
地下建筑起火后,由于浓烟()的弥漫,内部照明可能失去作用。
(A)火焰
(B)毒气
(C)湿度
(D)空气