Dolphins are air-breathing animals that live in the sea.But how do they sleep?Giraffes have almost no deep sleep.Do they feel tired? Scientists studying seals (海豹) and dolphins have made a surprising discovery—these animals can sleep with one half of their brain while the other half stays...
People and animals may get ill when they breathe the dirty air or drink the dirty water. Grass, trees and flowers will be dead if they grow from the dirty soil. That is a big problem. What can we do with rubbish? We must throw and reuse rubbish in right ways. We shouldn't throw ...
When you are on the beach you can breathe that clean air and view the beauty of the water and sand. It is a totally different experience from either simply sunbathing or passing it in a car. There are many choices of hiring a bicycle to experience the Gold Coast attractions. There are ...
While the right half of the dolphin's brain is asleep, the left half stays awake enough to control its body. This lets the dolphin keep its nose above the water so it can breathe. After about 20 minutes, two sides exchange, allowing the other half of the dolphin's brain to sleep. ...
sleeping underwater. Seals breathe air, but that doesn't stop some of them from sleeping underwater. They hold their breath and dive deep to sleep For up to 20 minutes at a time, sleeping deep underwater helps these seals stay safe from animals th...
From the passage, we know that A. When dolphins sleep, they can keep their noses in the se a to breathe. B. Frigate birds sleep for one minute when they fly on air currents over the ocean. C.Seals sleep with one half of their brain while the other half stays awake. D. When ...
People and animals may get ill when they breathe the dirty air or drink the dirty water. Grass, trees and flowers will be dead if they grow from the dirty soil. That is a big problem. What can we do with rubbish? We must throw and reuse rubbish in right ways. We shouldn't throw ...
This book far I have not imagined am so difficult.[translate] a準 拠 整合[translate] aThese are harming the earth's animals and plants.They also harm the air we breathe and water we drink 这些危害地球的动物和植物。他们也危害我们呼吸的空气并且浇灌我们喝[translate]...
Dolphins are air-breathing animals that live in the sea. But how do they sleep? Giraffes have almost no deep sleep. Do they feel tired? Scientists studying seals (海豹) and dolphins have made a surprising discovery一these animals can sleep with one half of their brain while the other half...
根据The carbon dioxide that people and animals breathe(呼吸)out is used by plants to breathe and help them(人类和动物呼出的二氧化碳被植物用来呼吸和帮助它们)可知二氧化碳帮助指物生长。故选A。(5)考查短语。A.put away储存;B.give off发出;C.take up开始从事;D.hold on坚持。根据throug...