货币的基本职能是：
A. 价值尺度和流通手段
B. 价值尺度和支付手段
C. 流通手段和贮藏手段
D. 流通手段和世界货币
What are the main threats to health in the modern society?
A. Smoking, drinking alcohol and an unbalanced diet.
B. Air pollution and traffic accidents.
C. Human’s emotional instability.
D. All of the above.
下列执行货币支付手段职能的有：
A. 工厂发给员工工资
B. 小王付给房东500元房租
C. 小张用支付宝支付买了一杯豆浆
D. A企业转账50万元给B企业，支付上年的货款
What are the main factors that contribute to good health?
A. Do regular exercise and develop good living habits.
Balance the diet and have a proper meal plan.
C. Have a positive attitude.
D. All of the above.
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