问题
填空题
物体由于 而具有的能叫做重力势能,物体 越大, 越高,它具有的重力势能就越大。
答案
被举高,质量,被举得
物体由于 而具有的能叫做重力势能,物体 越大, 越高,它具有的重力势能就越大。
被举高,质量,被举得
完型填空。 | ||||
Do you have a healthy eating habit? As we know, a healthy eating habit is good 1 health. Of all the things we eat and drink, 2__ is the most important. Not _ 3 people know this, but it is quite true (真实的). Our bodies can go 4__ food for a long time. 5__ for two or three days without water people may die. Many people don't know 6 _ water our bodies need to work well. And they don't drink 7__ water, especially(尤其) in hot weather. Most people drink only when they 8__ drink. But in fact they often 9__ more water, especially after they have sports. Do you know 65% to 75% of a man's 10__ is water? If we don't have enough water, we feel tired and may become ill. | ||||
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