题目内容
【题目】Choose the best answer and complete the passage(选择最恰当的选项完成短文)
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Kids love to run here, there and everywhere. But as we age, we seem to lose the enjoyment of running. This popular form of exercise, though, offers great benefits(好处) to everyone. It helps with weight control, and it________the effects of aging. It helps us relax and increases confidence. Running keeps the heart healthy and muscles and bones strong. It reduces the risk of heart disease. There are other benefits linked to running besides those related to(与…有关)________ You can run almost anywhere: you don't need a gym membership or expensive equipment. For that reason and others, running is a favorite form of exercise for many people.
If you want to run, how can you get started? It is not________to start exercising when you are not feeling well. If you haven't exercised in a while, you should check with your doctor. He or she will let you know if you're healthy enough to begin a new exercise routine. If your doctor says OK, you're ready to go!
What's next?
Choose a good pair of running shoes. They don't need to be expensive; they just need to give your feet good support.
Find a running________. On days that you don't feel like exercising, he or she can help encourage you. If you can't find anyone who enjoys running, take your dog along. It is always ready to go outside, and the exercise makes it healthier too.
Practice safety first. Be aware of the traffic and run facing the cars coming toward you. Don't wear headphones while running outside. They prevent you from hearing cars, stray dogs, etc. Be sure to carry identification, and wear__________clothing in order to be seen easily.
If you're ready to start, why not take part in is the next "Let's Run"? The event is a fundraiser that benefits children in need. It's a great way to experience the joy of running________giving a helping hand to the poor.
【1】A. improvesB. increasesC. delaysD. changes
【2】A. enjoymentB. healthC. energyD. wealth
【3】A. specialB. fairC. dangerousD. wise
【4】A. neighbourB. assistantC. passengerD. partner
【5】A. tightB. thickC. brightD. clean
【6】A. forB. whileC. ifD. though
【答案】
【1】C
【2】B
【3】D
【4】D
【5】C
【6】B
【解析】
小孩特别喜欢跑,但是我们这个年龄好像已丢了跑步的乐趣。跑步有很多好处,不但对身体有好处,而且不需要昂贵的设备。本文介绍了跑步的一些注意事项。
【1】句意:它能帮助控制体重,而且能够延缓年龄的影响。
improves改善;increases增加;delays延缓;changes改变。and连接两个并列的句子,两句均为说明这种锻炼的好处。the effects of aging意为“衰老的影响”,衰老的影响只能用延缓。故选C。
【2】句意:跑步除了这些与健康有关的好处外,还有一些其他好处。
enjoyment乐趣;health健康;energy能量;wealth财富。从It helps with weight control…It reduces the risk of heart disease.以上几句说明的都是跑步对健康的好处。空后介绍除了健康意外的好处。故选B。
【3】句意:当你感觉不是很好的时候,开始运动是特别不明智的。
special特殊的;fair公平的;dangerous危险的;wise明智的。根据He or she will let you know if you're healthy enough to begin a new exercise routine.可知足够健康的时候才能进行训练。因此可推断健康有问题的时候是不应该运动的,因此wise符合句意。故选D。
【4】句意:找一个跑步的伙伴。
neighbour邻居;assistant助理;passenger乘客;partner伙伴。根据后文On days that you don't feel like exercising, he or she can help encourage you.可知,当你不想锻炼的时候有人鼓励你。故选D。
【5】句意:……为了能被轻易的看到,穿明亮的衣服。
tight紧的;thick厚的;bright明亮的;clean干净的。根据…in order to be seen easily.可知能够被轻易地看见,所以应该是穿明亮的衣服。故选C。
【6】句意:这是一种很好的方式,体验跑步的快乐的同时能够给穷人帮助。
for为了;while与……同时;if如果;though尽管。根据后面动词用ing 形式,可判断用while表示“与……同时”。故选B。
完形填空题并不是单纯考查语法,也是考查学生综合运用语言的能力。因此,必须选择符合语法结构并能使上下文意义连贯的答案。如5小题,根据下文…in order to be seen easily.可知能够被轻易地看见,所以应该是穿明亮的衣服。有时候设置的选项具有迷惑性,如果单从语法角度分析,每个选项都是正确的,但是通过语境判断,只有一个选项能够传达文章意思。因此我们要回顾上文,兼顾下文,在文中寻找相关的线索或提示,从而确定答案。注意固定搭配,例如4小题,根据下文可以在你不想跑步的时候提醒你的应该是一起跑步的伙伴。
【题目】Human, Don’t Come too Close
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Frequent touching from humans may change plants’ genes and slow their growth. |
When we see babies or pets, we can’t help gently touching them to show our love. And they give us happy feelings back. But a recent study shows that it’s different for plants.
A study, published in The Plant Journal, shows that plants don’t “like” to be touched. That’s because touching changes their genes (基因) and, even worse, can slow their growth.
Professor Jim Whelan of the La Trobe Institute in Australia gave an explanation. “The lightest touch from a human, animal, insect, or even plants touching each other in the wind, leads to a huge gene change in the plant,” Science Daily reported.
In order to test the theory, the scientists did an experiment on plants. They grew a number of plants to the age of four weeks. Then they touched them with a paintbrush every 12 hours over a 36-hour period.
They found that as a response to the touch, the mitochondria (线粒体) in the plants had been partly destroyed. The mitochondria, as Science Alert noted, are the “powerhouse of the cell (细胞)”. The mitochondria produce energy for the rest of the cell in both animals and plants.
If this “powerhouse” is weakened, the plants will lose a large amount of energy that should have supported their growth. Whelan further explained to Science Daily, “If the touching is repeated, then plant growth is reduced by up to 30 percent.”
Although the process does have a strong effect on plants, usually the plants survive. Touching changes the plants, but it’s not necessarily a bad change.
According to Science Alert, frequent touching or moving plants will make them grow shorter than other ones. The researchers believe this change, in some way, could be helpful. It may help plants fight threats to their health such as insects and bad weather.
The new research findings have led to a deeper understanding of the plants’ response to touching. And the research might “open up new ways to reduce sensitivity (敏感性) and improve growth in the future”, Science Alert reported.
【1】Why did the scientists do the experiment?
A. To test if touching can change the genes of plants.
B. To show that plants’ and animals’ genes are different.
C. To tell when touching has effect on plants and animals.
D. To find out why some plants grow more slowly than others.
【2】What did the scientists find in their experiment?
A. Repeated touching shortened the plants’ life by four weeks.
B. Touching slowed down plant growth by reducing energy for growth.
C. Repeated touching made plants die sooner than they were expected to.
D. Mitochondria in the plants couldn’t produce energy because of touching.
【3】What do the scientists think of the fact that touch makes plants become shorter?
A. The plants will be more likely to be attracted by insects.
B. The plants will be more easily harmed by bad weather.
C. The plants will be less sensitive to being touched.
D. The plants will be better at fighting dangers.