Read the following article and answer the question. Article: Lettuce has been eaten for over 4,500 years, and was known to the Egyptians, Greeks and Romans. Now, people in some countries start the meal with lettuce as part of a salad. There are hundreds of kinds of lettuce. The main ones include head lettuce, such as iceberg, leaf lettuce,Boston, bibb and romaine. Experts say lettuce is one of the easiest crops to grow in your garden. The best time to plant the seeds is during cool weather. The University of Illinois Extension advises that the best planting temperature is 150C. Lettuce seeds are small, so do not place them too deep in the ground. If you plant some seeds every week or two, you will have crops ready to eat one after another. To start the seeds inside, you can use a seed tray in your home or other shelter. This container should be deep enough to hold at least three centimeters of soil or more. There should be about one centimeter of space between the soil and the top of the container. The container should have holes in the bottom so the extra water can flow out. Drop the seeds over the surface and cover them lightly with soil. If the soil is not already a little wet, give it some water. But do not drown the seeds. Next, cover the seed tray with paper. When the seedlings have come up far enough to touch the paper, take it off. You can transplant the seedlings into the garden when they are about two to three centimeters tall. Do this when the weather is not too hot and not too cold. Take out as much soil as you can with the seedlings, Then dig a hole in the ground bigger thanthe lettuce roots. Water the plants but not too heavily. Harvest leaf lettuces when the leaves are big enough to eat. Pull the leaves from the outside of the planting so the inside leaves will keep growing. Or, you can cut off the whole plant. Leave about two or three centimeters above the ground so the plant will re-grow. Cut off head lettuces at ground level. Lettuce is best when served fresh, so make a salad and enjoy. Experts say lettuce is one of the easiest crops to grow in your garden. Question: When eating Iettuce5you'd better _ so that it tastes best. Answer:
OPTIONS:
- store it in plastic bags
- eat the inside leaves
- wrap it in paper
- eat while it is fresh

Answer: eat while it is fresh

Read the following article and answer the question. Article: One day an out of work mimic is visiting the zoo and attempts to earn some money as a street performer. As soon as he starts to draw the crowd,a zoo keeper grabs him and drags him into his office. The zoo keeper explains to the mimic that the zoo's most popular attraction,a gorilla ,has died suddenly and the keeper fears that attendance at the zoo will fall off. He offers the mimic a job to dress up as the gorilla until they can get another one. The mimic accepts. So the next morning the mimic puts on the gorilla suit and enters the cage before the crowd comes. He discovers that it's a great job. He can sleep all he wants,play and make fun of people and he draws bigger crowds than he ever did as a mimic. However,eventually the crowds tire of him and he tires of just swinging on wires. He begins to notice that the people are paying more attention to the lion in the cage next to his. Not wanting to lose the attention of his audience,he climbs to the top of his cage,crawls across a partition ,and dangles from the top to the lion's cage. Of course,this makes the lion very angry,but the crowd loves it. At the end of the day the zoo keeper comes and gives the mimic a raise for being such a good attraction. Well,this goes on for some time-the mimic keeps taunting the lion,the crowds grow larger,and his salary keeps going up. Then one terrible day when he is dangling over the angry lion he slips and falls. The mimic is terrified. The lion gathers itself and prepares to attack. The mimic is so scared that he begins to run round and round the cage with the lion close behind. Finally,the mimic starts screaming and yelling,"Help me,help me!"But the lion is quick and attacks. The mimic soon finds himself flat on his back looking up at the angry lion and the lion says,"Shut up,you idiot!Do you want to get us both fired?" Question: The zoo keeper offers the mimic a job to act as the gorilla because _ . Answer:
OPTIONS:
- it is more expensive to hire a real gorilla
- the real gorilla died but the keeper does not want to lose its visitors
- he likes the mimic's performance
- he wants to help the mimic who is out of work

Answer: the real gorilla died but the keeper does not want to lose its visitors

Read the following article and answer the question. Article: Studies show farmland in Africa is often lacking in important nutrients. But researchers say combining different farming methods may help. Since the world food crisis several years ago, researchers have directed more of their attention to small farms. Most farms in areas south of the Sahara Desert are only about one or two hectares. One of the goals is to increase production without necessarily clearing more land to grow additional crops. American researchers say that can happen with greater use of an agricultural system called perennation. It mixes food crops with trees and perennial plants - those that return year after year. Mr. Reganold, who is with Washington State University, says poor soil may have resulted from years of weathering that washed away many nutrients. He says some farmers may have done more harm than good. He estimates that up to two billion dollars worth of nitrogen, phosphorous and potassium is lost from African soil each year. The scientist says the word perennation defines three systems that are already used in Africa. The oldest of the three is called evergreen agriculture. This is where farmers plant trees with their crops. John Reganold says farmers in Africa have been doing this for sixty years, but it seems to be growing in popularity. The method is gaining widespread use in countries such as Niger, Burkina Faso, Malawi and Zambia. The trees are planted among maize, millet or sorghum crops. They not only add nitrogen to the soil through their roots, but also through their leaves when they fall off and break down. At other times of the year, the trees can protect plants from strong sunlight. Mr. Reganold was one of three researchers who wrote a report about perennation. It was published in the journal Nature. Question: This report is mostly likely to be a journal of _ . Answer:
OPTIONS:
- food
- environment
- agriculture
- gardening

Answer:
agriculture