Holland has two-thirds the citizens of the State of New York, which is Holland． [ ] A．four times the size as B．the size four times of C．four times as the size of D．four times the size of 题目和参考答案——青夏教育精英家教网—

　　The greenhouse is mainly used in planting of vegetables and fruits of long-season and adopts soilless culture, planting not grown in the soil but in rock wool of bowl size instead．The growth of plants depends on nutrition liquid fed to by the computer through feeding system．

　　All crops will be covered with considerate cares：When indoor temperature of the glass greenhouse is lower than best temperature needed by crops, the computer will automatically commands the heating system to increase the temperature till getting the best; When the temperature higher, computer will then commands the decrease system to adjust; When the plant is in want of nutrition, the computer will automatically test and prepare according to demands of plants purposely and feed the nutrition liquid to crops through burette．

　　Planting tomatoes here, harvest time lasts 10 months for one planting time．The yield can be up to more than 46 kg per square meter．That's to say, a workshop of 1000 square meters can yield over 500 tons, as more than 100 times of that of traditional field planting．

　　Factory planting has already had decades' history in western countries and been very popular in countries of Israel and Holland．In Holland, there are 4700-ha glass greenhouse in the whole country and Israel as a country of desert becomes a great exporter of agricultural products by adopting workshop planting．It is obvious that workshop planting is an effective way to improve yield of unit area of the land, save resources of land and water, increase quality of agricultural products, reduce labor intensity and produce healthful, advantageous products without pollution．For the national situation of our country of numerous people sharing limited land, it's significant to demonstration and popularization of workshop planting．

(1)

Which is the best title for this passage?
[　　]
A．	Planting crops．
B．	Greenhouse planting．
C．	Agriculture today．
D．	The history of factory planting．

(2)

Crops can be grown ________ in a greenhouse．
[　　]
A．	without water
B．	without nutrition
C．	without soil
D．	any sources

(3)

If the yield of the greenhouse is 50 kg per square meter, what may be the yield of the traditional field planting per square meter?
[　　]
A．	5 kg．
B．	10 kg．
C．	0.5 kg．
D．	46 kg．

(4)

Which of the following statements is not the advantage of greenhouse planting according to the passage?
[　　]
A．	It can improve yield．
B．	It can increase quality of agricultural products．
C．	It can solve the problem of unemployment．
D．	It can save land and water．

　　The greenhouse is mainly used in planting of vegetables and fruits of long-season and adopts soilless culture, planting not grown in the soil but in rock wool of bowl size instead. The growth of plants depends on nutrition liquid fed to by the computer through feeding system.

　　All crops will be covered with considerate cares：When indoor temperature of the glass greenhouse is lower than best temperature needed by crops, the computer will automatically commands the heating system to increase the temperature till getting the best; When the temperature higher, computer will then commands the decrease system to adjust; When the plant is in want of nutrition, the computer will automatically test and prepare according to demands of plants purposely and feed the nutrition liquid to crops through burette.

　　Planting tomatoes here, harvest time 1asts 10 months for one planting time. The yield can be up to more than 46kg per square meter. That's to say, a workshop of 1000 square meters can yield over 500 tons, as more than 100 times of that of traditional field planting.

　　Factory planting has already had decades' history in western countries and been very popular in countries of Israel and Holland. In Holland, there are 4700-ha glass greenhouse in the whole country and Israel as a country of desert becomes a great exporter of agricultural products by adopting workshop planting. It is obvious that workshop planting is an effective way to improve yield of unit area of the land, save resources of land and water, increase quality of agricultural products, reduce labor intensity and produce healthful, advantageous products without pollution. For the national situation of our country of numerous people sharing limited land, it's significant to demonstration and popularization of workshop planting.

(1) Which is the best title for this passage?

[　　]

A．Planting crops.

B．Greenhouse planting.

C．Agriculture today

D．The history of factory planting

(2) Crops can be grown _____ in a greenhouse.

[　　]

(3) If the yield of the greenhouse is 50kg per square meter, what may be the yield of the traditional field planting per square meter?

[　　]

(4) Which of the following statements is not the advantage of greenhouse planting according to the passage?

[　　]

A．It can improve yield.

B．It can increase quality of agricultural products.

C．It can solve the problem of unemployment.

D．It can save land and water.

　　The greenhouse is mainly used in planting of vegetables and fruits of long-season and adopts soilless culture, planting not grown in the soil but in rock wool of bowl size instead. The growth of plants depends on nutrition liquid fed to by the computer through feeding system.

　　All crops will be covered with considerate cares：When indoor temperature of the glass greenhouse is lower than best temperature needed by crops, the computer will automatically commands the heating system to increase the temperature till getting the best; When the temperature higher, computer will then commands the decrease system to adjust; When the plant is in want of nutrition, the computer will automatically test and prepare according to demands of plants purposely and feed the nutrition liquid to crops through burette.

　　Planting tomatoes here, harvest time 1asts 10 months for one planting time. The yield can be up to more than 46kg per square meter. That's to say, a workshop of 1000 square meters can yield over 500 tons, as more than 100 times of that of traditional field planting.

　　Factory planting has already had decades' history in western countries and been very popular in countries of Israel and Holland. In Holland, there are 4700-ha glass greenhouse in the whole country and Israel as a country of desert becomes a great exporter of agricultural products by adopting workshop planting. It is obvious that workshop planting is an effective way to improve yield of unit area of the land, save resources of land and water, increase quality of agricultural products, reduce labor intensity and produce healthful, advantageous products without pollution. For the national situation of our country of numerous people sharing limited land, it's significant to demonstration and popularization of workshop planting.