旅游咨询仅为旅游者提供各种与旅游有关的信息服务。()
A．正确
B．错误
参考答案：错
---I prefer spending much time solving the problem to consulting my teacher.
---That’s_______ I don’t agree. You should turn to your teacher for help if necessary.
A．when
B．where
C．what
D．how
（）指的是悬浮在巷道空间中的粉尘。
A.落尘
B.积尘
C.浮尘
