Lettuce has been eaten for over 4,500 years, and was known to the Egyptians, Gre

Lettuce (莴苣)has beeneaten 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 togrow in your garden. The best time to plant the seeds is during cool weather.The University of Illinois Extension advises that the best planting temperatureis 15 ⁰C.

Lettuce seeds are small, so do not place them too deepin the ground. If you plant some seeds every week or two, you will have cropsready to eat one after another.

To start the seeds inside, you can use a seed tray inyour home or other shelter. This container should be deep enough to hold atleast three centimeters of soil or more. There should be about one centimeterof space between the soil and the top of the container. The container shouldhave holes in the bottom so the extra water can flow out. Drop the seeds overthe surface and cover them lightly with soil. If the soil is not already alittle wet, give it some water. But do not drown the seeds.

Next, cover the seed tray with paper. When theseedlings have come up far enough to touch the paper, take it off. You cantransplant the seedlings into the garden when they are about two to threecentimeters 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 theground bigger than the lettuce roots. Water the plants but nottoo heavily.

Harvest leaf lettuces when the leaves are big enoughto eat. Pull the leaves from the outside of the planting so the inside leaveswill keep growing. Or, you can cut off the whole plant. Leave about two orthree centimeters above the ground so the plant will re-grow. Cut off headlettuces at ground level.

Lettuce is best when served fresh, so make a salad andenjoy. Experts say lettuce is one of the easiest crops to grow in your garden.

1.Which of the following shows the right order ofplanting lettuces?

a.Diga hole in the ground bigger than the lettuce roots.

b.Dropthe seeds over the surface.

c.Waterthe plants.

d.Coverthe seed with soil.

e.Takeoff the paper.

f.Transplantthe seedlings into the garden.

A. b, d, e ，f, a,c    B. a, b ，c, d ，e, f

C. d, e，f, b，a，c   D. b，c, d，e，f，a

2.The underlined word “seedlings” in paragraph 5means______.

A.containers     B.seeds     C.youngplants D.layers

3.When eating Iettuce₅ you’d better ______so that it tastes best.

A.storeit in plastic bags     B.eat the inside leaves

C.wrapit in paper      D.eat while it is fresh

4.What can we infer from the passage?

A.Lettuceis the easiest crop to grow in your garden.

B.Thelettuce is not hard to plant and store.

C.Wecan plant lettuce in a two-centimeter-high tray.

D.Weshould water lettuce at least twice a day.

试题答案

【答案】

1.A

2.C

3.D

4.B

【解析】

试题