难度星级】 ★★Humans are mostly made of water. A 70-kilo man has about 1 9 liters of water in his body. If people lose 1%s of body weight, they feel 31. t. At 15~12% weight loss, they die from thirst.Scientists have shown that monkeys can live a very long life on very li...
C Plants and animals are largely made of water. So are humans. They need to keep enough water inside them, or they could die.We get some of the water we need by eating food that has water in it. Drinks, such as milk and tea,are mostly water, too. A person needs water every day...
(E)Plants and animals are largely made of water.So are humans.They need to keep enough wa-ter inside them, or they could die.We get some of the water we need by eating food that has water in it.Drinks, such as milkand tea, are mostly water, too.A person needs water every day....
根据上文“Straightened streams move faster than winding ones, giving water less time to flow downward.(笔直的河流比蜿蜒的河流流得快,水向下流动的时间更少)”以及后文“Dams starve downstream areas of sediment (沉积物) needed to protect coasts against rising seas. And they wash away riverbed ecosys...
Like other species, we are the products of millions of years of adaptation. Now we're taking matters into our own hands.
trillion m3of water is used by humans per year. 出自-2013年12月阅读原文 It is hard for robots to replace humans in highly professional work. 出自-2012年12月阅读原文 They beat humans in precision 出自-2012年12月阅读原文 They sacrifice their lives for the benefit of humans. 出自-2011年12月...
The dynamics are, of course, totally unfamiliar, and viscous damping seriously confounds underwater simulation. A unique haptic simulator called Charlotte (after the spider of the same name) helped to augment the visual simulation (Figure 5.5). It was a real but very light two-foot cubical ...
There is a big puddle of water behind our house that the little humans play in. I try to join them but they splash me, and I get scared. It smells funny and there are things living in there that must really like being wet because they never come out. I try to catch them but they...
___2___ our tent on a high flat ground where water could not pour in.Mom got some snacks and drinks ready for us while we played games and ___3___ about our daily life, which made wetweather camping fun.How ___4___ it was camping under the sound of the rain! We were ...
Gavin: When you talk about space resources, do you mean metals, non-metals, water? Su:Silicon, metals, and other resources will be important. But within this decade, our first priority is water. That’s because water is made of hydrogen and oxygen. These are propulsion fuels. We have to...