Where dose this conversation take place?[音频]
A. In a coffee bar.
B. In the canteen.
C. In the staff room.
What's the relationship between the two speakers?
A. Diner and waiter.
B. Doctor and patient.
Colleagues.
Cause and effect is often used to explain the writer’s view.
A. 对
B. 错
Many hair problems________what you eat.
A. result from
B. result in
C. lead to
D. because
微信支付 
支付宝支付