问题 单项选择题

在边际收益递减规律中,劳动经济学通常把()视为可变要素。

A.资金
B.土地
C.机器设备
D.劳动力

答案

参考答案:D

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Most schools are trying hard to improve their lunch programs and they want to offer the best food they can.
Even if your school provides healthy options(选择),you may still want to have something delicious outside.
How do you take control? Take a packed lunch to school!
Here are the four reasons to pack your lunch and snacks at least twice a week.
Control  Have you ever waited in the lunch line only to find when you get to the front that you don’t like what they’re serving?
Variety  If you’re eating the same food all the time , your body probably feels ready for a change. Packing lunch a couple of times a week means you can enjoy some favorites that you might not find at every school.
Money Serving Packing healthy snacks so that you needn’t go out for a fast-food lunch, chocolate or a soda! If so, you will save much money. And you can buy something you need.
Warm Feeling   Remember when your mom or dad used to pack your lunch? Pack a lunch for yourself, maybe that is your favorite healthy food.
Whether you pack or eat in the cafeteria(自助食堂),what’s important is that you make right choices. If you are worried that cafeteria doesn’t offer enough healthy choices, try to make changes. Ask a teacher or someone in food service for advice on hoe to get started.
Take a packed lunch to school
 
___小题1:___ for packing your lunch and snacks twice a week
To control diets
It helps __小题2:_ you eating the unhealthy    food and you needn’t wait in line.
To be __小题3:__
Your body needs __小题4:__and you can enjoy some favorites which are not_小题5:__at school
To _小题6:__money
Healthy snacks from home are ___小题7:___ __小题8:__than a fast-food lunch.
To feel warm
In the past, your parents packed lunch for you while you just do it_小题9:__now.
Conclusion
It’s important to __小题10:__the right food. Go for advice on how to start.
问答题 简答题