1 . There are actually three common types of pink eye (红眼病), medically known as conjunctivitis (结膜炎). Two-viral and bacterial-can spread from person to person. The third, allergic, involves your surrounding environment.
How does pink eye start? An infected person touches his or her eyes, then touches something else. If you touch that person or object and then your eyes, you can contract the same infection. That includes shaking hands, sharing towels or pillows, or even papers if you work in an office job. So when it comes to how to get pink eye, not washing your hands-and frequently touching your face-can both play a big role. Pink eye can also spread when you use old makeup or share makeup. In fact, if someone in your household develops bacterial or viral conjunctivitis, replace or at least wash everything you can, including sheets, towels, taps, and other bathroom equipment.
Contact lens (隐形眼镜) is another common way to develop bacterial conjunctivitis. Always wash and dry your hands before handling your contacts. Use the solution and storage methods recommended by your eye doctor. All these steps become even more important if someone in your household already has pink eye. If you do develop conjunctivitis yourself, take your contacts out and throw them away. Wear glasses until your doctor gives you the OK to put your lenses back in. And clean your glasses frequently too. When it’s time to wear contacts again, start with a new pair.
Unlike bacterial and viral conjunctivitis, allergic conjunctivitis is caused by something in your surrounding environment. You might develop symptoms during allergy season in the spring or fall, caused by the same flowers or trees that cause hay fever. This adds the difficulties to the prevention of conjunctivitis.
While not every case of pink eye requires medical treatment, doctor recommends that anyone with a sudden start of these symptoms see a doctor. Some cases can turn serious, and symptoms can be similar to those of other vision-threatening eye conditions
1. Where is this text most likely from?| A．A diary. | B．A magazine. |
| C．A novel. | D．A guidebook. |
| A．Stopping working indoors. |
| B．Taking exercises in advance. |
| C．Washing your face frequently. |
| D．Separating from any infected person. |
| A．He has to throw them away and get a new pair after recovery. |
| B．He must abandon them and wear glasses ever since. |
| C．He should clean them up more frequently. |
| D．He may give them away to others. |
| A．Conjunctivitis patients have different symptoms. |
| B．Every case of pink eye requires medical treatment. |
| C．Some serious eye diseases have symptoms similar to conjunctivitis. |
| D．Conjunctivitis sufferers have to be separated in hospital. |
2 . We have most friends at the age of 26 after having spent the first quarter of our lives building up our friendship circle, new research has claimed.
The research into friendship shows that our social circle peaks at 26 years and 7 months, at which we typically have five close friends.Women are most popular at 25 years and 10 months, with men hitting the highest friendship point a little later at 27 years and 3 months.
The research, by Forever Friends, shows that about a third of adults meet their closest friends while at school，with about a fifth saying they meet them at work.
Social networks such as Facebook and Twitter now also play a major role in building new friendship.The research points out that 25 to 34yearolds make 22 friends via Facebook, compared to 18 to 24yearolds who make 12, and 35 to 44yearolds who make just four.
Forever Friends' relationship coach Sam Owen says, “It is no coincidence that over a third of us meet our best friends at school. It is a key time in our lives when friendship is growing through sharing notes，giving gifts, seeing each other regularly and laughing a lot. As adults we can often forget how powerful these small things are and how the little things can make a difference.”
Later in life we find ourselves losing friends. Over half of us lose friendship through moving, while 36% say that over time they grow apart from close pals. Having children also causes 19% to drift away from childhood friends.
With growing pressure being put on friendship these days，it's important to make time for our friendship.
1. How many friends can a 20yearold college student make via Facebook?| A．4. | B．12. |
| C．18. | D．22. |
| A．how important making friends is |
| B．that friendship is not easy to keep |
| C．how much has been done to keep friendship |
| D．School time is an important period to develop friendship. |
| A．make sense of | B．lose touch with |
| C．feel sorry for | D．make up with |
| A．Facebook or Twitter | B．an advertisement |
| C．a textbook | D．a newspaper |
3 . The third-generation hybrid rice（杂交水稻）which was developed by Yuan Longping, the "father of hybrid rice", and his team ran its first public yield（产量）monitoring from Monday to Tuesday and achieved high output. The final yield of the tested variety, G3-1S/P19, came to1046.3 kg per mu（about 667 square meters）, based on two pieces of land in Qingzhu Village under the city of Hengyang in central China's Hunan Province.
"Some previous high-yielding hybrid rice varieties in China took 160 to even 180 days from sowing（播种）to harvesting, while the figure was shortened to around 125 days for the new variety. This is one of the most important features（特征）of the third-generation hybrid rice that can reduce the use of pesticides（杀虫剂）and fertilizers（化肥）, thus reducing cost and improving production efficiency." said Qian Qian, the deputy director of the China National Rice Research Institute.
Unlike the previous two generations that required a large amount of water and fertilizers as well as demanding growing conditions and technological support, the third-generation hybrid rice is easier to be cultivated（种植）by ordinary farmers. So the soil, altitude and climate of the test site were not "ideal conditions" carefully selected beforehand but were close to the paddies（稻田）of ordinary farmers.
Nowadays. China's average yield of rice is about 500 kg per mu. Ordinary farmers can produce 600 kg to 700 kg of rice per mu by growing some excellent second-generation hybrid rice varieties. However, under the same planting conditions and environment, the yield of the third-generation hybrid rice could reach 800 kg per mu. China now feeds around 20 percent of the world's population with less than 9 percent of the world's arable（可耕种的）land.
At present, Yuan's team has nine third-generation hybrid rice combinations under trial, which are expected to achieve commercial seed production in the following three to four years and hope to apply the technology into the research of sea rice. The third-generation hybrid rice has the comprehensive strength to promote a greener and more sustainable development of China's rice production with higher quality and yield.
1. What feature of the new hybrid rice does Qian Qian mainly talk about?| A．It saves a lot more water. | B．It achieves a higher yield. |
| C．It saves much more farmland. | D．It has a shorter growing period. |
| A．The ordinary farmers master planting technology. |
| B．The researchers want to reduce the experiment cost. |
| C．The growing conditions the new hybrid rice needs are simple. |
| D．The previous rice farming provides researchers with experience. |
| A．The high output of the third-generation hybrid rice. |
| B．The future of the new hybrid rice variety. |
| C．The advanced technology of the research on hybrid rice. |
| D．The differences between the three hybrid rice varieties. |
| A．A guide book. | B．A news report. |
| C．An advertisement. | D．A fashion magazine. |
4 . It’s 3 o'clock and you’ve been hard at work. As you sit at your desk, a strong desire (欲望) for chocolate overcomes you. You try to busy yourself to make it go away. But it doesn’t. Here is another situation. Perhaps you are not feeling well. The only thing you want to eat is a big bowl of chicken soup, like your mom used to make when you were sick as a child. Food cravings are a strong desire for a specific type of food. And they are normal.
Scientists at the website How Stuff Works compare hunger and cravings this way. Hunger is a fairly simple connection between the stomach and the brain. They even call it simply “stomach hunger.” When our stomachs burn up all of the food we have eaten, a hormone (荷尔蒙) sends a message to one part of the brain for more food, which controls our most basic body functions such as thirst, hunger and sleep. The brain then produces a chemical to start the appetite (食欲) and you eat. Hunger is a function of survival.
A craving is more complex. It activates (刺激) brain areas related to emotion, memory and reward. These are the same areas of the brain activated during drug-craving studies. Because of this, some scientists call food cravings “mind hunger.” People often crave foods that are high in fat and sugar. Foods that are high in fat or high in sugar produce chemicals in the brain. These chemicals give us feelings of pleasure.
In a 2007 study, researchers at Cambridge University found that “dieting or controlled eating generally increases the possibility of food craving.” So, the more you refuse yourself a food that you want, the more you may crave it. However, fasting is a bit different. They found that eating no food at all for a short period of time reduced food cravings.
So, the next time you crave something very special, know that it’s the fault of your brain, instead of your stomach.
1. The author describes two situations in the first paragraph to ________.| A．deepen the understanding of hunger | B．report the discovery of craving study |
| C．introduce the topic of the whole passage | D．remind readers of their own special food |
| A．It shows food is connected with emotion. | B．It makes sure that a person survives hunger. |
| C．It means the stomach functions well. | D．It proves the brain decides your appetite. |
| A．The drop of chemicals. | B．The increase of food desire. |
| C．The refusal of fat and sugar. | D．The disappearance of appetite. |
| A．Education. | B．Entertainment. |
| C．Science. | D．Economy. |
5 . Pangolins (穿山甲) are the most trafficked (非法交易) mammals in the world and are facing extinction. To draw attention to these scaly (有鳞片的), anteater-like animals, a new wildlife documentary, Eye of the Pangolin, is attempting a unique way to inspire action and conservation. Partnering with the non-profit organization Pangolin. Africa, the documentary was made available on YouTube in May 2019. The intention is to reach communities wherever the Internet is available, especially African communities, who live near the animal’s habitats.
Over two years, the documentary crew traveled to South Africa, Ghana, Central African Republic and Gabon in search of the four unique species of pangolin, which has never been achieved before. Filmmakers Bruce Young and Johan Vermeulen say that they went into the shoot knowing relatively little about pangolins, but grew to respect and appreciate the animals. Getting close to the creatures over two years was a crash course in these secretive creatures. Johan Vermeulen said, "One thing however that might seem unimportant is that they are actually quite fussy eaters. You would think they would eat any type of ant, but they all prefer a specific type ant."
Pangolins are hunted illegally across Africa for their scales, which are used for traditional medicine, and their meat. In April 2019, Singaporean customs officials conducted two separate seizures of 24 tons of pangolin scales, which equals to the death of 69,000 pangolins.
Though the documentary focuses less on the trafficking of pangolins, and more on the animals in their natural habitat, the aim of the documentary is to inspire viewers around the world to call for action to end trafficking and protecting these unique creatures.
Filmed on location in South Africa, Ghana, Central African Republic, and Gabon, this powerful documentary is the story of two men on a mission to get all four species of African pangolin on camera for the very first time.
1. What is the purpose of the documentary?| A．To study the situation of pangolins. |
| B．To collect fund to protect pangolins. |
| C．To raise awareness of pangolin protection. |
| D．To propose setting up pangolin reserves. |
| A．Picky. | B．Messy. |
| C．Showy. | D．Heavy. |
| A．The illegal trade of pangolins. |
| B．The medical function of pangolin's scales. |
| C．The life of pangolins in their natural habitats. |
| D．The efforts of Pangolin, Africa to save pangolins. |
| A．A brochure. | B．A diary. |
| C．A novel. | D．A magazine. |
6 . Smart Home Products for Living a Connected Life
What makes something a smart home product? Generally, it’s defined by its ability to connect to a Wi-Fi network, allowing users to interact（互动）with it from their smartphones.We’ve rounded up some cool, diverse offerings that you’ll love to have in your home.
Nest Cam IQ
walmart.com
$299.00
The Nest Cam IQ is a beautifully designed home security camera that can recognize faces. It can warn you if there’s a stranger in your home. The device also supports two-way communication via built-in microphones and a powerful speaker.
Logitech Harmony Elite
amazon.com
$249.99
The Logitech Harmony Elite is one of the best universal remote controls available on the market. It can control just about every piece of electronics you own（it supports over 270，000 devices！）in every room of your house or apartment, including TVs，streaming devices, and sound systems.
Apple HomePod
bhphotovideo.com
$349.00
The Apple HomePod has better audio quality than any other smart speaker available today. Available in white or space gray, the Siri-powered device also allows you to control a number of devices with your voice.
August Smart Lock Pro
amazon.com
$279.99
The August Smart Lock Pro is compatible（兼容的）with most locks. A mobile app allows you to manage access to the lock, check its usage history, and get informed when someone opens the door. You can control it and check on the state of your door with voice commands.
1. What can the Nest Cam IQ help you do？| A．Properly use your smartphone camera |
| B．Control electronics with your voice. |
| C．Check the locks of your house. |
| D．Keep your home safe. |
| A．Nest Cam IQ. |
| B．Apple HomePod. |
| C．August Smart Lock Pro. |
| D．Logitech Harmony Elite. |
| A．Technology. |
| B．News. |
| C．Society. |
| D．Education. |
7 . Some of the best thing in life don’t happen until you grow old enough to recognize them. I can say that about tea. .
I didn’t start to drink tea until I was 35. The first time felt a genuine urge to drink tea was in 2003, when I stayed briefly in the United Kingdom. After a time of consuming local food, I started to really like strong black tea.
I took packs of green tea with me as gifts but was disappointed to find my British friends preferred much stronger black tea from Sri Lanka. Later I learned that although people know China for its tea, it ranks only third among the world’s black tea exporters, after Sri Lanka and Kenya.
After I came back to China and started to cover food stories, I met friends in the tea-drinking circle and learned more. Although the majority of the rest of the world drinks black tea, which the Chinese call “red tea”, China processes and drinks mostly green tea.
I feel lucky to be Chinese because of the great variety of tea available in the county. It is estimated that there are more than 2000 tea in China it you divide them geographically,] including more than 600 locally famous tea. A more simple way to categorize it is by color ； and extent of fermentation(发酵). That comes down to six main categories --- green, white, yellow, dark greenish(oolong), red and black tea.
Tasting tea can be compared to our life. It can be plain and predictable but sometimes it is j full of pleasant surprises. Occasionally it can even seem too good to be true. The best thing is, you know there’s always more to explore.
1. Which country ranks first among the worlds black tea exporters?| A．China. | B．Sri Lanka. |
| C．Kenya. | D．United Kingdom. |
| A．journalist | B．manager |
| C．scientist | D．tea grower |
| A．varieties of tea is planted and produced each year in China |
| B．tea in China can be divided into more than 2000 categories geographically |
| C．tea in China can be categorized by color and extent of fermentation |
| D．all tea in China can be divided into six categories with no exception |
| A．World. | B．Business. |
| C．Lifestyle. | D．Travel. |
8 . The baby is just one day old and has not yet left hospital. She is quiet but alert (警觉的). Twenty centimeters from her face researchers have placed a white card with two black spots on it. She stares at it carefully. A researcher removes the card and replaces it by another, this time with the spots differently spaced. As the cards change from one to the other, her gaze(凝视) starts to lose its focus—until a third, with three black spots, is presented. Her gaze returns: she looks at it for twice as long as she did at the previous card. Can she tell that the number two is different from three, just 24 hours after coming into the world?
Or do newborns simply prefer more to fewer? The same experiment, but with three spots shown before two, shows the same return of interest when the number of spots changes. Perhaps it is just the newness? When slightly older babies were shown cards with pictures of objects (a comb, a key, an orange and so on), changing the number of objects had an effect separate from changing the objects themselves. Could it be the pattern that two things make, as opposed to three? No again. Babies paid more attention to squares moving randomly(随意地)on a screen when their number changed from two to three, or three to two. The effect even crosses between senses. Babies who were repeatedly shown two spots became more excited when they then heard three drumbeats than when they heard just two; likewise(同样地) when the researchers started with drumbeats and moved to spots.
1. The experiment described in Paragraph 1 is related to the baby's ________.| A．sense of hearing | B．sense of sight |
| C．sense of touch | D．sense of smell |
| A．the size of cards | B．the colour of pictures |
| C．the shape of patterns | D．the number of objects |
| A．To reduce the difficulty of the experiment. |
| B．To see how babies recognize sounds. |
| C．To carry their experiment further. |
| D．To keep the babies' interest. |
| A．Science fiction. | B．Children’s literature. |
| C．An advertisement. | D．A science report. |
Rain forests slightly farther away from the equator remain just as warm,but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(雨季) begins.Thus these areas are known as the “monsoon forest”.
Another type of rain forest grows on tropical mountains.It is often called the “cloud forest” because clouds often hang over the trees like fog.
The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten,the seeds inside them go undamaged through animals’ stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees.
1. The climate of the rain forests near the equator is _______.
| A．mild,wet and windy | B．hot,rainy and foggy |
| C．hot,wet and cloudy | D．warm,wet and sunny |
| A．tree leaves are green all the time in the monsoon forest |
| B．there is a dry season in the cloud forest on tropical mountains |
| C．clouds help the plants in the rain forest near the deserts to grow |
| D．the formation of climate in the rain forest has little to do with the trees |
| A．animals | B．droppings | C．fruits | D．winds |
| A．a travel guide | B．a story book |
| C．a technical report | D．a geography book |
