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教学过程教学环节教师活动学生活动设计意图Step 1:Leading-inAsk Ss to do a guessing game:Ask Ss to do abrainstroming to think ofwhere can we find water.To check Ss’ homework about the facts of water1.Ss may answer oxygen, ice and water.2. Ss may give somepossible answers likebathroom, ...
Some of the more common ones are that when swimming, it ispossible for the carbon dioxide in the water to mix with the oxygen that is in the swimming poolcausing the water to become cloudy and this can reduce the absorption rate significantly. Also, it is possible that the swimming pool ...
Increased circulation.Heat can encourage blood flow, which provides the skin with more oxygen and makes it look healthier. Increased circulation can also stimulatecollagenandelastinproduction. Elastin fibers maintain your skin’s resiliency and elasticity, which helpsreduce the appearance of wrinkles. Prod...
These sugars break down further, freeing their atomic building blocks: carbon, hydrogen and oxygen. Hydrogen and oxygen atoms reunite to form water, and the carbon clusters in increasingly larger clumps. Eventually the water evaporates and the carbon starts to burn. However, if you stop this ...
●Keep the patient warm. ●Do not give the patient any food or water. ●Have the patient rest for at least l5 minutes. If Someone Gets a Scorpion(蝎子)Sting(叮)... ●Place the patient on her back. ●Keep the patient calm. Do not allow the patient to walk or move, if unnecessary...
There’s no denying how exercise is great for our cardiovascular system, mental health, and mood. Exercise improves the delivery of blood flow and oxygen to all our tissues by pumping more blood throughout the body. This increased blood flow i...
Earth? It might be better called Oceanus: most of it is, after all, covered in water—much of it very warm water. The really interesting thing about the ocean is not how hot it is, but the difference in temperature between the surface (where the Sun keeps the sea relatively hot) and...
1. Desert animals are usually more active at night because .A. it is cooler at nightB. it is easier to find waterC. they like the darkD. they are less likely to be attacked at night答案:A指导:文章的首句:“Bothwarm-bloodedandcold-blooded desert animals have ways to escape the desert...
At the most basic level, wind is born because of differences in Earth’s temperature, which are caused by the uneven heating of our planet by the sun. Anther crucial factor behind wind is the air itself, the atmosphere around us, which is composed of nitrogen, oxygen and water vapor, alo...