题型:阅读选择 题类:真题 难易度:普通
青海省2019年中考英语试卷(音频暂未更新)
The world got a glimpse(一瞥) of one of the greatest mysteries of our universe(宇宙) on April 10.
That′s when the first image of a black hole was shown to the public. The picture was created by a network of eight radio telescopes(射电望远镜).
"We have seen what we thought was unseeable, "says Shep Doeleman. He led the effort to create the image.
The black hole is at the center of galaxy (星系)named Messier 87, some 55 million light﹣years from the earth, and is 6.5 billion times the mass of the sun.
The image shows the gas, dust, and stars that move around the black hole before disappearing into it. It does not truly show the black hole, because not even light can escape its gravity. Black holes, like vacuums, suck(吸)in everything that gets too close.
Parents today also worry about their children's diets. Some doctors give the following advice:
Teenagers shouldn't eat too much junk food. Teenagers shouldn't eat food with too much salt. Salt can cause high blood pressure in the future. Teenagers should eat food with less fat, oil and sugar. Teenagers need to eat some fruits and vegetables every day. Fruits and vegetables are rich in vitamins and have little fat. Teenagers need to drink more milk. Milk will help their bones grow. Teenagers need to eat breakfast every day. This is good for their bodies and minds. |
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