The river flows quickly. What is the past tense of “flows”? A. flowed B. flows C. flowing D. flow 相关知识点: 试题来源: 解析 A。“flow”的过去式是“flowed”。选项 B 是第三人称单数形式;选项 C 是现在分词;选项 D 是原形。
What makes a river flow? A. Wind B. Gravity C. Sunlight D. Clouds 相关知识点: 试题来源: 解析 B。风不会使河流流动,选项 A 错误;阳光也不能让河流流动,选项 C 错误;云同样不能使河流流动,选项 D 错误;重力使河流从高处向低处流动,选项 B 正确。
The damage couldn’t be reversed overnight. Although I should mention that by 1996, the water in one of the rivers flowing through the basin was clean enough that it was the site of the Olympic white water kayaking competition. And that river is still used now for recreation. ...
One place where this tidal energy can be harnessed is at a shallow body of water, such as an estuary. Now, can anyone tell us what an estuary is? Yes, Ted. Student: An estuary is where a river enters the ocean. The fresh water meets the ocean water. ...
A . Bends in the river become gradually straighter. B . Material from one riverbank is deposited on the other. C . The intensity of the river's flow increases. D . The growth of plants on the outer riverbank is enhanced. 收藏 查看解析 ...
A34. What can we infer about River Cleaning? A. It is powered by the natural flow of the river. B. It may produce a small amount of waste. C. It is unable to pick up tiny particles. D. It may block the water passage. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏 ...
upon the riverine environment. The result is River Cleaning, a100 percent low cost, low impact solution.42. Fixed (fix) on the bed at the bottom of the river, River Cleaning is a series of buoys(浮标) that spin(旋转) around axles(轴) powered by the natural flow of the river.It has...
Fluids flow easily and conform to the shape of their containers. The geologic processes related to the movement of fluids on a planet’s surface can completely resurface a planet many times. These processes derive their energy from the Sun and the gravitational forces of the planet itself. As ...
the State of Qin as an irrigation and flood control system.Dujiangyan is a remarkable example of ancient engineering skill and is still in use today.During the Warring States period,people who lived along the banks of the Min River were troubled by annual flooding.Qin gove...
717.Artemisinin has become a vital part of the treatment for malaria, and is thought to save 100, 000 lives a year in Africa alone. 青蒿素成了抗疟疾药物的关键成分,据估计每年仅在非洲就挽救了10万人的性命。 718.Tu...