[填空题]In hot areas people have to keep such food as fish and meat in cold ______ (store) all the year round.

[填空题]In tropic areas people have to keep such food as fish and meat in cold (store)（）especially in the fridge.

[填空题]People keep food with it.

[单项选择]
Why does the woman want to have French food

[单项选择]A. Have some food. B. Clean the table.
C. Make a phone call. D. Buy a dictionary.

[单项选择]A. How to keep fish.
B. How to make large aquatic appliances.
C. Whcther the man is qualified to be the apprentice.
D. Whether the man is a good apprentice.

[填空题]People in remote areas who live in miserable conditions have the most health problems.

[单项选择]

Scientists have rediscovered certain food crops, once commonly cultivated in the New World, which contain more protein per pound than do current staple food crops such as rice and wheat. Scientists claim that cultivation of these crops could greatly benefit densely populated countries that have low per-person calorie intake and inadequate source of protein.
Which of the following, if true, casts the most serious doubt on the claim made above（）

A. The average yield per acre of the rediscovered crops is substantially less than that of the current staple food crops
B. Many important food crops, such as tomato, originated in the New World
C. Wheat yields more protein per pound than does rice
D. The rediscovered crops have more caloric per pound than do current, staple food crops
E. As few as 20 different food crops provide the bulk of the planet’s food supply

[填空题]Eating fish and walnuts may help keep our spirits up, because they contains ______.

[填空题]People who live in heavily industrialized areas do not get as much sunlight as they should. Dust (1) over a city at altitudes (海拔) of between 4,000 and 8,000 feet cuts out between 20 and 50 percent of the sunlight and up to 90 percent of the ultraviolet light (紫外线). But dust is not the only thing to (2) about. When fuels are burned, whether in a factory, or in a home, or in the engine of a car, CO₂ is given off. CO₂ in the atmosphere acts as a kind of (3) around the earth, keeping warms in and so slowly raising the (4) of the earth. This could really change the climate all over the world.
Everybody wants to have a car. (5) , while they are giving us so much pleasure, cars are also poisoning us. The amount of dangerous substances sent out by a car is quite (6) . Did you know, for example, that a hundred cars produce on (7) a third of a ton of CO₂ as well a