根据第一段第二句Although blood looks red when it’s outside the body, when it’s sitting in the vein near the surface of the skin, it’s more of a dark reddish purple color.很容易判断出皮肤表面的静脉是暗红色的。 2.D 细节理解题。根据第四段最后一句Or, more often, become more bent ...
To prevent another stroke, my doctors told me, I’d have to take dangerously high levels of blood thinner (血液稀释剂) for the rest of my life and any travel would be risky.I had to think about what was important to me: family, of course, and friends. But then what No matter how...
Why does the man refuse the electionA.He has no time for it.B.He considers it stressful.C.He lacks required abilities. 免费查看参考答案及解析 题目: —It’s so cold outside that my finger feel ___.—Why not go inside and warm yourself by the fireA.boredB.deadC.comfortableD...
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"When the moon is within the umbra, it will turn a reddish hue. Lunar eclipses are sometimes called 'Blood Moons' because of this phenomenon,"NASA said. A lunar eclipse happens when the sun, moon and Earth are lined up in that exact order.(Image credit: Shutterstock) ...
In most cases, faces flush or faces turning red are normal. It is actually caused because when we exercise; the capillaries in our face and throughout the body dilate and blood flows via them in an effort to move the heat that our body is generating to the surface of the skin; where ...
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Black or very dark green poop can be a side effect of iron pills you take foranemia,a condition that happens when you don't have enough redblood cellsto carry oxygen around your body. This side effect isn't harmful, but call your doctor if: ...
So while other sharks may just want a sample to find out if a person is edible, the tiger shark is less likely to let go once it's taken a bite. If a tiger shark does decide to continue eating, you're in for an unpleasant experience, to say the least. Their jaws have elastic ...
This compound in turn combines with the protein fluorine in the hemoglobin so that the red blood cells can get the oxygen they need which they do when we are breathing. However, the amount of carbon dioxide that combines with the protein will depend upon the concentration of carbon dioxide in...