How do you usually sleep — barefoot (赤脚) or with socks on? Scientists have found that wearing socks to bed can help you fall asleep more quickly. Isn’t that amazing?
The temperature of your internal organs (内脏器官) is called your core body temperature (核心体温). During the day, your core body temperature stays around 37 degrees. Over the course of seven or eight hours of sleep, it drops by as much as 1.2 degrees. How does this happen? Well, when your brain decides that your internal organs should cool down, it will widen your blood vessels (血管). The warmer blood from your body’s core will then go to the rest of your body. In this way, your core body temperature gradually drops.
This process is important for falling asleep. In fact, the faster your body’s core cools down, the faster you will get to sleep. According to scientists, wearing socks can help widen your blood vessels. This, in turn, lowers your core body temperature and helps you fall asleep more quickly.
If you have trouble getting to sleep, why not give it a try? Take a warm foot bath before bed and put on your socks. You’ll probably fall asleep fifteen minutes faster than usual!
根据材料内容选择最佳答案。1. How does the writer lead into the topic?
| A．By asking a question. | B．By giving an example. |
| C．By listing a fact. | D．By telling a joke. |
A． | B． | C． | D． |
| A．Wearing socks can make you hard to sleep. |
| B．Wearing socks can help widen your blood vessels. |
| C．Seven or eight hours of sleep is good for your health. |
| D．Taking a warm bath before going to bed. |
| A．Tips on how to fall asleep faster. | B．Different people’s sleep. problems. |
| C．The importance of going to bed early. | D．The trouble of wearing socks to sleep. |
| A．Sports. | B．Science and technology. | C．Health. | D．Education. |
相似题推荐
【推荐1】Chopsticks play an important part in Chinese food culture. Chopsticks are called “Kuaizi” in Chinese and were called “Zhu” in ancient times. Chinese people have been using “Kuaizi” for more than 3000 years.
It was written in Liji that chopsticks were used in the Shang Dynasty (王朝). It was said in one Chinese history book that Zhou, the last king of the Shang Dynasty, used ivory (象牙) chopsticks. Experts believe the history of wood or bamboo chopsticks can go back to about 1000 years earlier than ivory chopsticks. Gold and silver chopsticks became popular in the Tang Dynasty.
Chopsticks can be divided into different groups, such as wood, metal, bone, stone chopsticks. Bamboo and wood chopsticks are the most popular ones used in Chinese homes.
There are a few things to be careful about when using chopsticks. Chinese people usually don’t beat their bowls while eating, since the act used to be practised by beggars. Also don’t put chopsticks in a bowl because it is a custom only used in sacrifice (祭祀). If you are really interested in chopsticks, you may want to visit the Kuaizi Museum in Shanghai. The museum has collected over 1000 pairs of chopsticks. The oldest one is from the Tang Dynasty.
1. What are the most popular chopsticks in Chinese homes?| A．Gold and silver chopsticks. | B．Ivory chopsticks. |
| C．Bamboo and wood chopsticks. | D．Stone chopsticks. |
| A．Ivory chopsticks, bamboo chopsticks, gold chopsticks. |
| B．Bamboo chopsticks, ivory chopsticks, gold chopsticks. |
| C．Gold chopsticks, bamboo chopsticks, ivory chopsticks. |
| D．Gold chopsticks, ivory chopsticks, bamboo chopsticks. |
| A．Chopsticks were called “Kuaizi” in ancient times. |
| B．“Kuaizi” and “Zhu” are the same. |
| C．All people used gold chopsticks in the Tang Dynasty. |
| D．Chinese people beat their bowls with chopsticks while eating. |
| A．How to Use Chopsticks | B．Useful Chopsticks |
| C．Chinese Food Culture | D．History of Chopsticks |
【推荐2】We start growing from the moment we were born. We keep growing and growing until we become adults. We become bigger, taller and heavier.
While our body parts grow, they do it at different speeds. One’s nose might have finished growing but the other parts of the face are still changing.
Similarly, each child grows at his or her own speed.
No matter how quickly and how much we grow, each person is different. That is the beauty human growth.
| A．Our skin also grows as the rest of our bodies get bigger. |
| B．As we grow, important parts of our body change. |
| C．Parents who are tall are just unlikely to have very short children. |
| D．Some grow at a slower speed, and may be smaller and shorter. |
| E．So we see children in all kinds of shapes and sizes. |
【推荐3】One way that scientists (科学家) learn about man is by studying animals．In this lab, the scientists are studying the relationship between diet and health．
They are studying the relationship between the amount (数量) of food the mice eat and their health．The mice are in three groups．All three groups are receiving the same healthy food．The first group is eating one cup of food each day, the second group is eating two cups, and the third group is eating three cups．
After three years, the healthiest group is the one that is only eating one cup of food each day．The mice in this group are a little thinner. But they are more active．Most of the day, they are running, playing with one another．Also, they are living longer．Mice usually live for two years．Most of the mice in this group are still alive after three years．
The second group of mice is healthy, too．They are active, but not as active as the thinner mice．They are only living about two years．
The last group of mice is receiving more food than the other two groups．Most of the day, these mice are eating or sleeping．They are not very active．These mice are living longer than the scientists thought－about a year and a half．But they are not healthy．They are sick more often than the other two groups．
1. People give each group of the mice _______ amount of food every year.| A．a different | B．the same | C．a small | D．a large |
| A．one and a half | B．two | C．two and a half | D．three |
| A．the scientists | B．the mice in the first group |
| C．all the mice | D．the mice in the last group |
| A．Man and health | B．Diet and animals |
| C．Diet and health | D．Animals and human beings |
| A．eating less may bring longer life |
| B．the mice eat more than the scientists thought |
| C．the mice live longer than the scientists thought |
| D．the more exercise you take, the healthier you will be |
【推荐1】Hello! My name is Gina Green. I have two good friends at school. They are Tina and Tracy. Here is a photo of us.
The girl in the middle is Tina! She is a good student at school, and she is good at（擅长）English. Tina is very nice, and she always helps me with English.
What’s that on that girl’s head? Oh, it is a nice purple hat. Who is the girl? She is Tracy. Tracy is good at English, too. And she is a clean girl. Her clothes（衣服）are always clean, and her room is always tidy.
The last girl is me. I am a nice girl, too, and I always help others. But my English is not good, and I am not tidy. Tina and Tracy always help me. I like them very much.
1. Who is good at English?| A．Gina | B．Tina | C．Tracy | D．B and C |
| A．On Gina's head | B．On Tina's head | C．On Tracy's head | D．In Tracy's hand（手） |
| A．Tina and Tracy. | B．Her clothes. | C．Others. | D．Her hats. |
| A．Gina's last name is Green. | B．Gina is in the middle in the photo. |
| C．Tracy's room is always tidy. | D．Gina isn't good at English. |
A. This electronic drinking water heater provides water of any temperature you need without waiting for a long time. It’s great for people who enjoy making coffee or milk. B. The Beidou Navigation Satellite System（北斗导航卫星系统） is made up of 59 satellites. It can be found inside mobile phones, cars and watches. With one in your car, you will know where you are anytime. C. This new body checking system helps to record how someone moves his body as he sleeps. Changing too often in sleep means he has a poor sleep. D. The machine uses very hot water to wash away the oil on the dishes. It makes them clean and dry quickly. It can save you a lot of time. E. This AI home helper is a smart speaker. It can follow your voice instructions to take photos, play music and read e-books anywhere you need at home. F. This smartwatch is a wearable computer. It can tell you where your children are. You can also use it to make phone calls and take pictures. G. This sweeping robot has a brush in it which helps to clean litter on the ground. It can finish cleaning the floor by itself. |
Born in 1964 in Hangzhou，Zhejiang. Ma grew up as a happy kid. When he was a teenager he wanted to learn English. Every morning，he got up at 5 a.m., rode his bike for 40 minutes to a hotel near the West Lake and talked with foreign tourists in English. He did it for nine years ， rainy or shine。
The experience made him an excellent English speaker and opened his eyes to the outside world. In 1994，Ma Yun heard about the Internet. And on a 1995 trip to the US ，Ma was shown the Internet for the first time. He searched the word “beer” on Yahoo，and found that there was nothing there about China. Seeing the chance，Ma returned to China and set up a website called China Pages without even knowing much about computers.
Four years later，Ma，his wife and his friends set up Alibaba in HangZhou. He believed in the Internet business potential（潜力）when few other Chinese did.15 year later，Alibaba has developed into the world’s largest e-commerce company（电子商务公司），owning popular shopping websites like Taobao and Tmall.
1. The underlined word “it” in the second paragraph refers to（指的是） .
| A．riding a bike |
| B．teaching English |
| C．playing on computers |
| D．practicing English with foreigners |
| A．The first website Ma Yun set up was Yahoo. |
| B．Alibaba raised a lot of money after it went public. |
| C．Ma Yun began to learn English when he was a teenager. |
| D．Ma Yun believed that lnternet business world have a bright future. |
| A．How Ma Yun made history. |
| B．The history of Alibaba Group. |
| C．How Ma Yun learned English |
| D．The development of e-commerce in China. |
