With this ___, your children will be able to design their own rivers and dams. ___ kid B kit___ kick___ keep 相关知识点: 试题来源: 解析 kit 该题考察词汇辨析,需要选择与“设计河流和大坝”相关的词语。根据句意,孩子们需要工具或设备来进行设计,而“kit”表示成套工具,符合语境。因此,答案为...
Rivers, dams, and willow flycatchers: a summary of their science and policy connections The southwestern willow flycatcher ( Empidonax traillii extimus) is a riparian bird that spends winter months in Central and South America and summer breed... WL Graf,J Stromberg,B Valentine - 《Geomorphology...
Dams can be formed by non-human processes such as ice movement and debris accumulation. However, the majority of dams are constructed by humans to impound or control the movement of water in rivers, streams and estuaries. They have been built in pre-agricultural, agricultural and industrial ...
The dams are thicker at the bottom with a shallow slope on the upstream side, meaning that the weight of the water pushes down on the dam, keeping it in place and allowing it to hold back large volumes of water. Their engineering work is so effective that beaver dams can last for ...
Jongo added that the deaths were reported in Korogwe, Handeni, Muheza and Kilindi districts. She appealed to members of the public to stop attempting to cross over flooded rivers or to swim in flooded dams for their own safety.■
,定位到文章第一段第三句“This is primarily because beavers need to use their dams to hide from predators like bears, wolves, and river otters.(这主要是因为河狸需要使用它们的水坝来躲避熊、狼和水獭等掠食者。)”,可知本题选择C项(保护他们自己免受掠食者的伤害)更符合题意。A项:在冬季保持温暖;B...
Dams can be formed by non-human processes such as ice movement and debris accumulation. However, the majority of dams are constructed by humans to impound or control the movement of water in rivers, streams and estuaries. They have been built in pre-agricultural, agricultural and industrial ...
Rivers, dams, and willow flycatchers: a summary of their science and policy connections The southwestern willow flycatcher ( Empidonax traillii extimus) is a riparian bird that spends winter months in Central and South America and summer breed... WL Graf,J Stromberg,B Valentine - 《Geomorphology...
In addition, the dams can help water flow to the newly created ponds, thus, preventing flooding in areas downstream of the rivers where these dams are built. They also protect the land from soil erosion(侵蚀,流失) and block pollu-tants in the water flow downstream into major water bodies....
Seventy-seven percent of the total water discharge of the 139 largest river systems in North America north of Mexico, in Europe, and in the republics of th... M Dynesius,C Nilsson - 《Science》 被引量: 4039发表: 1994年 Plant dispersal along rivers fragmented by dams damsfragmentationhydro...