How to keep healthy mentally?
A. Listen to the music and go to the pub regularly.
B. Play with friends happily and go outing reluctantly.
C. Listen to the music and play with friends happily.
D. Go to the pub regularly and go outing reluctantly.
在1只绵羊=2把斧子这一价值形式中，绵羊处于等价物形式，而斧子处于相对价值形式位置。
A. 对
B. 错
What is the first thing to do if you want to see a doctor in western countries?
A. Make an appointment.
B. Call the secretary of the doctor.
C. Make sure the hospital is available.
Describe the symptoms to the doctor.
价格是价值的货币表现，商品的价格与价值成正比，与货币的价值成反比。
A. 对
B. 错
微信支付 
支付宝支付