阅读理解。 How should we clecide what to eat in a low-carbon（低碳）lifestyle? Do you buy tomatoes from a place far away or those grown in a local greenhouse? Is organic（有机的）food healthier for humans and the earth? Here is some advice that you can follow when you are choosing what food to buy. Eat less red meat Your doctor may have advised you to eat less red meat because itis bad for your health. There are environmental reasons, too, because a meat-based diet needs more land, energy and water than a plbased one. Buy local food often The reasons are as following: first, locally-grown food often uses much less f'uel（燃料）than I froru afaraway place, because there js no need to transport（运输）it ove.r a long distance. Second, kind of food is fresh and rich in nutrients. Choose food that has not been processed(加工)much Heavily processed food is probably high in fat and sugar that are harmful to the health. On the o hand, more energy is needed to transport the food. So it would be better for you to get food that goes f the field to the table. Buy organic food Crowing organic food produces less pollution than growing traditional foocl. Ancl studies show organic food is often richer in nutrients. 1. Jn the first paragraph, the writer means to____. A. introduce organic food to people B. introduce the topic of the passage C. tell people how to choose tomatoes D. tell people how a greenhouse works 2. If you eat less red meat, you can be healthier and____. A. do something good to the environment B.enjoy more tasty food C. spend less money on food D．put on more weight 3. What does the underlined word 'nutrients' mean in Chinese? A. 水分 B．化学物质 C．营养物 D．微生物 4. The writer suggests that we should buy all kinds of food EXCEPT A. organic food B.local food C.fresh food D.foreign food 5. What does a low-carbon lifestyle mean according to the passage? A. Eating more delicious food. B. Making people know more about healthy food. C. Knowing more about the environment and making good use of it. D. Keeping people healthy and at the same time protecting the environment.