Farmers can grow these fish in the lakes and rivers with water hyacinths.”和“So it will be possible to make methane gas with water hyacinths.”可知,可以用来喂鱼,制造甲烷气体。③④是水葫芦的用途。故选A。 (5)题详解: 主旨大意题。根据“But now scientists think that water hyacinths can ...
The water hyacinth(水葫芦) is one of the fastest growing water plants and it grows in many countries. It has beautiful purple-blue flowers but most people don't like it. Millions of water hyacinths grow in rivers and lakes. Sometimes the plants become so thick that people can walk on th...
The water hyacinth(水葫芦)grows in tropical countries where the weather is hot and wet.It has beautiful purple-blue flowers,but everybody hates it.Why? Millions and millions of these plants grow in rivers and lakes.Sometimes the plants become so thick that people can walk on them.People cann...
Millions of water hyacinths grow in rivers and lakes. Sometimes the plants become so thick that people can walk on them. People can't travel on boats on the water and they cannot fish in it. The plants also stop the water from moving. Then the water carries germs(细菌)that may make ...
Plants are racing to claim their space on the surface. The water lettuce rapidly expands its network of hanging roots so that it starts absorbing nutrients before other competitors arrive. Water hyacinth(凤眼蓝,水葫芦) appears. Its leaves are carried on stalks, filled with air, that also make...
water hyacinth词源英文解释 The first known use of water hyacinth was in 1706 water hyacinth儿童词典英英释义 good1 of 3adjective of a favorable character or tendency good news fertile sense 1 good land handsome sense 3, attractive good looks agreeable sense 1, pleasant a good place to live ...
Compared with the situation in 1960, few people now use water hyacinth plants to feed pigs or ducks, or to make fertilisers. It poses a great threat to agriculture, fisheries, transportation and the environment. It is estimated that each year more than 100 million RMB yuan (US 12m dollar)...
The water hyacinth grows in tropical countries. It has beautiful purple-blue flowers,but everybody hates it. Millions and millions of these plants grow in rivers and lakes. Sometimes the plants become so thick that people can walk on them. People cannot
(Lemna spp.), frogbits (Hydrocharis spp.), mosquito ferns (Azolla spp.), water lettuce (Pistia stratiodes), water chestnuts (Trapa spp.) and water hyacinth (Eichhornia crassipes). These plants can proliferate in the warm summer months and cover the water surface, cooling and shading the ...
The water hyacinth flower (Eichhornia crassipes) is a type of freshwater plant many of which live in rivers or swamps in the tropics ,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为