题型:阅读理解 题类:常考题 难易度:困难
甘肃省天水市通渭县第二中学2018届高三上学期英语期中考试试卷
If you want to slow aging, you might want to eat less. This finding is good news—if you were a mouse. The researchers studied mice, not people.
John Price and other researchers studied two groups of mice. One group was able to eat as much as it wanted. The researchers limited what the mice in the other group ate. Their diet had 35 percent fewer calories than the first group of mice.
Price says the mice with the diet restrictions were “more energetic and suffered fewer diseases.” They were not just living longer but seemed to stay younger for a longer period of time.
The researchers found that fewer calories slow down a natural mechanism in cells called ribosomes. Price explains that ribosomes are responsible for making important proteins in the cells. But with fewer calories, they slow down. This gives the cells more time to repair themselves.
The researchers say ribosomes use from 10 to 20 percent of the cell's energy to make those proteins. Price wrote that “because of this, it is impractical to destroy an entire ribosome” when it starts to break down. However, “repairing individual parts of the ribosome on a regular basis enables ribosomes to continue producing high quality proteins for longer than they would otherwise. This top quality production, in turn, keeps cells and the entire body functioning well.”
Price said, “ribosome is a very complex machine, like a car.” They need “maintenance to replace the parts that wear out the fastest. When tires wear out,” he explained, “you don't throw the whole car away and buy a new one. It costs less to replace the old tires.”
“Food,” he said, “isn't just material to be burned—it's a signal that tells our body and cells how to respond.” Price said the findings help to explain how exactly our bodies age. And this may “help us make more educated decisions about what we eat.”
Time management refers to managing time effectively so that the right time is allocated to the right activity. Time management is essential in every field of life because time is the precious resource one needs to accomplish a task. Every single moment that passes once will never come back again. Time management helps you do your task in time and use your time more productively. It helps you to identify the useless activities which can be avoided and how time can be saved. It helps you allocate proper time for a task and perform the task more efficiently.
A student's daily routine is filled with a lot of activities. Some are related to his studies, some are essential for his life and some are for entertainment or physical fitness. Still some activities have no use and just waste time. Similarly if the number of the activities for entertainment exceeds what is reasonable, they waste the time of a student. These activities include using the internet for chatting, playing games, watching movies or listening to music for hours on end. Such activities are called “distracters” which distract one from one's real purpose.
Games and physical exercise are important for a student because they keep him fit in body and mind but game time should be controlled as it may waste his time.
No one wastes time intentionally. Time is always wasted in an insensible way. That's why a student is aware of it until the days of exams come. So it is better to use the present time more effectively than cry over what you've done in the future.
As for a student, time management compromises various steps. It is not only necessary to allocate time for different subjects but also to identify right time for each such subject. What's more, to identify the distracters which become causes of wastage of time is of significance as well.
Take a pen and sheet. Write down all the activities you do in your daily routine. Calculate how much time you have for your studies other than other activities. Determine how much time a subject can take out of your total study time. See which subject need more time.
Time management
Definition | You manage your time effectively for the {#blank#}1{#/blank#} of giving the right time to the right activity. |
Significance | ●It is essential in every field of life because of the {#blank#}2{#/blank#}of time. ●It helps you do your task in time, use your time more productively, {#blank#}3{#/blank#}wasting time, give proper time to a task and perform the task more effectively. |
{#blank#}4{#/blank#} | ●Identify all the activities in your daily routine and remove{#blank#}5{#/blank#}ones. ●Strictly {#blank#}6{#/blank#}time spent on activities for entertainment. ●Games and physical exercise are helpful to keep you fit physically and{#blank#}7{#/blank#}, but the amount of time spent on them should not exceed what is reasonable. ●Time is always wasted in an insensible way, so take care. ●Manage the present time more effectively in order not to cry over the {#blank#}8{#/blank#}in the future. |
Steps | ● {#blank#}9{#/blank#}all the activities in your daily routine. ● Calculating how much time you need for your studies other than other activities. ● {#blank#}10{#/blank#}time for different subjects. ● Identifying the right time for each subject. |
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