问题 问答题 简答题

玛咖是一种保健及药用价值极高的农产品,因产量极低而价格昂贵。玛咖原产于海拔3500~4500米的秘鲁安第斯山区,在极为苛刻的条件下才能生长,对环境污染相当敏感,当地亦有“玛咖一季休耕三年”的说法,种植全过程完全使用人工。美国和日本已经引种成功,终因质量差而不能规模生产。2003年中国云南玉龙雪山海拔3000米以上区域引种成功,目前成为世界第二大优良玛咖产区,种植规模仍在扩大

(2)分析说明玛咖是一种真正的天然无公害绿色食品的原因。

答案

参考答案:

玛咖生长的环境特殊,人迹罕至,(土壤肥沃,)完全采用人工种植,所以生长过程中不用施用化肥和农药;远离各种污染。

解析:本题主要从玛咖生长的环境、种植方式、种植过程来分析。即玛咖生长的环境特殊,人迹罕至,远离各种污染;种植方式:完全采用人工种植;种植过程:生长过程中不用施用化肥和农药。

阅读理解

阅读理解。

     Many people like to travel by plane because it's fast, but I don't like it because an airport is usually far

from the city. You have to get there early and wait for hours for the plane to take off' and it is often late.  

You can't open the window. You can't choose the food.

     I like traveling by train. I think trains are safe. Railway stations are usually in cities. When you are late

for a train you can catch another one.You can walk around in the train and open the windows. You can

see many interesting things on your way.  But I know it takes a little more time.

     I also like cars. You can start your journey when you want to, and you don't need to get to a  railway

station or a bus stop. Also you can carry many things with you in a car. But sometimes there are too

many cars on the road.

根据短文内容,选择正确答案。

1. Why do many people like to travel by plane?

A. Because it is fast.

B. Because it is saf'e.

C. Because you can walk around in the plane.

D. Because you can open the door.

2. Which is not the good thing about the train?

A. It is safe.

B. It takes a little more time.

C. You can open the windows.

D. You can see many funny things.

3. If you want to take a lot of  things with you, what do you take to go out?

A. A bus.            

B. A bike.

C. A train.            

D. A car.

4. What is the bad thing about the car travel?

A. You needn't go to a station.

B. You can start your journey when you want to.

C. There are too many cars on the road.

D. The cars are too expensive.

5. What does the writer think of the plane, train and car?

A. He thinks it takes a lot of time to get to the airport and wait for a plane.

B. He likes to take a train because it takes a little more time.

C. He likes to take a car because he has a car.

D. He doesn't like the plane or the train.

判断题