题型:阅读还原 题类: 难易度:普通
浙江省义乌市稠州中学2023-2024学年八年级下学期3月独立作业检查英语试题
In the 2030s, NASA plans to land humans on Mars. That's not such a long time, but do the astronauts have to keep awake and wait in those nine months? Can't they go into a hibernation-like state(类似休眠的状态) during the journey and wake up when they get to Mars?
A group of scientists have been testing to see if it might work. It's a state when an animal stops moving and its body temperature and heart rate drop. Some animals, such as mice, naturally enter torpor(迟钝) wen the weather is cold or food is short. Torpor is similar to hibernation.
Scientists wanted to find a way to make mice enter torpor. When the team turned the hats on, the mice's body temperature and heart rate fell, just as they would during torpor. They kept the mice in the state for 24 hours. When the scientists turned off the hats, they recovered(恢复) completely within two hours.
Rats are larger than mice and they don't naturally enter torpor. During the test, the rats' body temperature also fell, although not as much as it did in the mice.
The results with the rats mean that scientists can try the test on animals that don't naturally enter torpor, including humans. After all, they need to make sure the test on humans is safe.
A. It is hard to keep awake. B. It's sometimes called the Red Planet. C. The scientists then tried the test on rats. D. They tested something called torpor first. E. The journey could take around nine months. F. To do this, they made special hats for the mice. G. However, they still have a lot work to do before testing on humans. |
This is the Healthy Diet Pyramid. It is a diet for a healthy life. Different kinds of food are at different levels (层) of the pyramid.
Here is the first level. {#blank#}1{#/blank#} About50% of our diet should be these kinds of food.
At the second level, there are more green foods. {#blank#}2{#/blank#} These should be 30% of our diet.
{#blank#}3{#/blank#} They are important foods with a lot of protein(蛋白质). And they should be about 18% of our diet.
At the top (顶端) of the pyramid, there are foods like ice-creams and candies. {#blank#}4{#/blank#} They can make us fat.
The diet pyramid is not difficult to remember. Know about it and try to live a healthy life.
A. Fruit and vegetables are in this level. B. We cannot eat too much of these things. C. The third level are foods like meat, fish, and cheese. D. We should eat a lot of these things. E. We can see bread, rice, and potatoes in this level. |
What food would you like for your lunch? (请用3-15个单词回答问题) {#blank#}5{#/blank#}
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