Problem: OPTIONS:
- using a wind machine to drive away the cold air
- equipping his orange trees with a computer
- watering it at the proper time
- picking his fruit at the first sign of frost
Q: Read the following article and answer the question. Article: Farmer Ed Rawlings smiles as he looks at his orange trees. The young oranges are growing well in Florida's weather. Warm sunshine and gentle rains, along with Ed Rawlings' expert care, will produce a good crop of oranges this year. However, Ed has to guard against Florida's changeable winter weather. In January and February, temperatures can destroy Ed's entire orange crop. Having farmed in Florida for the past 35 years, Ed is prepared for the frost . When temperatures drop below freezing, Ed tries to save his crop by watering his orange trees. The water freezes and forms a thin layer of ice around the trees. Strange as it may sound, this thin layer of ice actually keeps the fruit warm. What happens is simple. When the trees are watered, the water loses heat and becomes ice. The warmth of the heat it loses is taken in by the fruit and keeps its temperature at a safe level. Ed has effectively used this method to save many orange crops. But Ed still faces difficulties. The trees must be watered at the exact moment the temperature drops to the freezing point. Also, just the right quantity of water must be used. Too much water can form a thicker layer of ice that will break the tree's branches . Another difficulty is that wind blows away the heat, so Ed has to worry about not only when but also how often his trees should be watered, and how much water should be used. Computer technology may help Ed with some of these worries. With equipment , air and soil temperatures and wind speed can be measured. The information is fed into a computer which can calculate when the temperature will drop below freezing. The computer can correctly decide the quantity of water to be used and how frequently( ) the trees should be watered. Ed finds looking after his orange trees a lot easier with the help of a computer, and, his customers will have the benefits of computer--age oranges. Question: Ed tries to protect his crop by _ . Answer:
Answer: watering it at the proper time
Problem: OPTIONS:
- makes a loud noise
- raises its head
- moves up and down
- does a little dance
Q: Read the following article and answer the question. Article: Animals, including insects , don't have a 'language' like ours. They do not 'talk' to each other in words and sentences . But if we watch them, we can see that they have their ways of communicating with each other. Can you see the rabbit's tail? When rabbits see this white tail moving up and down, they run away. They know that they are in danger. The rabbit told them something without making a sound. It has given them a signal . Many other animals use this kind of 'language'. When a cobra is angry, it raises its head and makes itself look powerful . This warns other animals. When a bee found some food, it goes back to its home. It cannot 'tell' the other bees where the food is by speaking to them, but it does a little dance. This tells the bees where the food is. Some animals 'say' things by making sounds. A dog barks, for example, when a stranger comes near. A cat purrs when it is pleased. Some birds make several different sounds, evry sound has its own meaning. Sometimes we human beings speak in the same way. We make sounds like"Oh" or "Ah" when we are afraid or happy or when we drop something on our toes. Question: When a cobra is angry, it . Answer:
Answer: raises its head
Problem: OPTIONS:
- many people like shopping at weekends.
- it is fun for Tom to go shopping with his friends.
- people don't like shopping at weekends.
- things are cheap at weekends.
Q: Read the following article and answer the question. Article: My name is Tom. I like shopping, but I think shopping with young children is not an easy thing. I have to look after them while I am shopping. I don't think shopping with women is fun, either. I often go shopping with my friends. It is fun. If I think a kind of shirt is fit for me, I think it is also fit for my friends. So I'd like them to think about buying the same things. My name is Sandy. I like shopping too. But I never go shopping on Saturdays or Sundays. There are a lot of people in the shops. I like shopping with my friends. I usually spend a lot of time choosing things because I never buy the first thing I see. I always look around other shops to find the best price. I can find the best very well. I dislike buying food in small shops and street markets. I think food in the supermarket is very fresh and very cheap, so I like shopping there. Question: From what Tom says, we know _ . Answer:
Answer:
it is fun for Tom to go shopping with his friends.