According to Mr Van Rijsselberghe,he was able to harvest vegetables from most of the eight test areas.The vegetables were smaller than those grown in fresh water,but they have more sugar and salt,thus tasting better.

　　The farmer grew carrots,cabbage,onions and beetroot.But he found that potatoes grew better than the other vegetables in the combination of sea and fresh water.Mr Van Rijsselberghe says four kinds of these potatoes were recently sent to Pakistan,where thousands of hectares of land have been damaged by salinization.Farmers in Pakistan hope to see if they can be grown in those fields.

　　1.What is preventing farmers from making full use of coastal fields?

　　A.Salinization. B.Saline.

　　C.Irrigation. D.Farming.

　　2.Which shows the correct order of the experiment by Marc and the scientists?

　　a.creating water with eight levels of salinity

　　b.starting dripping irrigation

　　c.dividing the farm with plants into 8 irrigated areas

　　d.pumping fresh and sea water through separate pipes

　　A.c—a—d—b B.d—c—a—b

　　C.d—c—b—a D.c—d—a—b

　　3.Dutch potatoes were sent to Pakinstan mainly because. 

　　A.the potatoes can be farmed in Pakistan on a large scale

　　B.Pakistan has complete irrigation systems for this kind of plant

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