题干

(本题满分12分)某花农培育甲种花木2株,乙种花木3株,共需成本1700元;培育甲种花木3株,乙种花木1株,共需成本1500元.
(1)求甲、乙两种花木每株成本分别为多少元?
(2)据市场调研,1株甲种花木售价为760元, 1株乙种花木售价为540元.该花农决定在成本不超过30000元的前提下培育甲乙两种花木,若培育乙种花木的株数是甲种花木的3倍还多10株,那么要使总利润不少于21600元,花农有哪几种具体的培育方案?
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Fitting in fitness

    Do you find excuses not to exercise? ____ Here are a few ways to get you going.

Do what you love.

    The easiest way to fall into the habit of doing exercise is to choose an activity you enjoy — one that doesn't feel like exercise, even though it is. ____ If you play to your strengths, you'll find fitness activities you can enjoy for years.

Choose your hour.

    Studies have shown that people who work out in the morning are most likely to stick with a routine. By doing exercise before the day starts, they can avoid the last-minute scheduling conflicts. But if you' re not a morning person, choose whatever time works best for you. ____

Call it by another name.

    ____ If it's something you have to do anyway — like washing the car or planting some bushes in the yard — you'll achieve two goals at once.

Partner up.

    Exercise is more fun when you do it with others. ____ On days when your motivation is low, you' re more likely to stick with the programme to avoid disappointing your exercise partners. You can also train with an expert. A personal trainer will help you set goals, design a personalized fitness programme, and vary your routine to keep it challenging.

A. Ask yourself: what am I good at?

B. Make fitness part of your social routine.

C. For example, you can join a running, walking, hiking, biking or tennis club.

D. If you're in top form from noon to 1 pm, aim for a lunchtime workout.

E. Would you rather do anything else — even sort your socks or clean the fridge?

F. If a damp T-shirt is not your idea of a good time, try gentler forms of exercise.

G. Substitute some challenging household activity for the standard exercise routine.