We all have an idea about the common types of environmental problems. 1.But, the fact is, it does affect mankind, other living forms and the environment as a whole.

What is light pollution? 2.The obvious cause of light pollution is the use of outdoor lighting products improperly. It can be office lighting, car headlights, station lights, streetlights and many more.

3.Upon studies, it is found that obvious effects are observed in the behaviour of night animals, for bright light at night makes it difficult for these animals to hunt, wander and perform their regular activities. light pollution is directly or indirectly responsible for causing several plant diseases. Its effects are related to disturbance in the physical rhythm, which contributes to risks of developing cancer cells. So, it’s nothing less than a threat to human health.

You have already seen the negative effects of light pollution on creatures. Apart from this, the actual cost of misused light is about millions of dollars every year. It also leads to the release of greenhouse gases and global warming4.

While outdoor lighting and using man-made lighting products are part of our modern lifestyle, some simple ways will surely help in reducing light pollution. For example, while installing outdoor lighting, make sure that they are pointed downwards5. Believe it or not, many people living in the urban areas cannot view clear sky and stars at night. Let’s contribute our part in reducing the pollution.

A. Light pollution is harmful to both animals and plants.

B. It presents all forms of misused man-mad light.

C. After all, fuels are used for producing electricity

D. Also, use only the required lighting equipment for both home and offices.

E. Citizens should be forbidden to install outdoor lighting

F. Light pollution affects animals’ normal activities in the daytime.

G. However, light pollution may be a new term to many of us.

Now a group of scientists, including ones from CalTech, MIT and the LIGO Scientific Collaboration finally found the gravitational waves(引力波).They announced they were able to see ripples(波纹) in the structure of spacetime.

What are these gravitational waves? Well, imagine throwing a rock into a pond. When the rock hits the flat surface of the water, it creates ripples. Spacetime is like the surface of the water. So gravitational waves are like the ripples moving out from where the rock hits the water.

It was Einstein who said these gravitational waves should be observable. But these are not huge waves. They are smaller than the size of an atom, which is why it took so long to find them.

Since 2002, scientists have been watching for these gravitational waves, using a giant scientific tool called LIGO. They have been watching two black holes in another galaxy(星系) faraway. The two were spinning around each other, moving closer and closer together. When they finally crashed into each other, gravitational waves were caused. With great power and force, they rang throughout the universe, like a giant bell. Those waves, traveling at the speed of light, finally reached the Earth, some 1.3 billion years later. The National Science Foundation said that each of the black holes was 29 to 36 times the mass of our sun.

This discovery means our understanding of the heavens has changed greatly.

1.The author explains the gravitational waves by ________.

A. presenting recent research findings

B. drawing a vivid picture

C. comparing them to something familiar

D. using proper examples

2.According to the author, finding the gravitational waves means ________.

A. there is a better way to deal with physics problems

B. we have a better understanding of the universe

C. we have reached a new level in earth studies

D. there exists another galaxy in the universe

3.What does the word “they” in Paragraph 4 refer to?

A. The black holes.

B. The gravitational waves.

C. The scientific tools.

D. The galaxies.

4.This passage mainly talks about ________.

A. a new theory of gravitational waves opposite to Einstein’s

B. a description of the scientific research on black holes

C. the relationship between black holes and gravitational waves

D. the discovery of gravitational waves Einstein believed observable

Nowadays there seems to be an app for everything. And mobile apps have been a part of our life. The following apps are part of the most popular apps.

Ctrip can be the best helper when you feel it hard to buy the train or airline tickets. You can buy tickets anywhere at anytime.

Ximalaya Reading has millions of books including poems, short stories, novels and even fairy tales for children. What’s special about it is that you can use it to download book recording that can be listened to. It has more than 1 million valuable resources.

Baby Bus is a very good friend for children under three years old. Kids can learn to speak, understand numbers and draw pictures with the help of this app.

Word Hero may help learn more English words while you’re playing games, so if you have problems remembering the new words when you learn English, use it!

World of Tanks Blitz(坦克世界), a free-to-play online: game with over 40 million downloads, bring quick-fire tank fights. “A lot of tanks, a lot of people and a lot of fun.” It will be the best choice to kill your time.

1.Ctrip is a useful app for .

A. playing games

B. learning English

C. booking tickets

2.You can NOT know about from Ximalaya Reading.

A. poems B. novels C. news

3.To remember words in a fun way, is a good choice.

A. Ctrip B. Word Hero C. Baby Bus

4.World of Tanks Blitz has downloads and it fits people’s free time.

A. more than 40 million

B. less than 1 million

C. more than 40 billion

5.According to the information above, .

A. we can buy tickets from Ctrip only in the daytime

B. Peter, a 2-year-old boy, can learn to draw pictures with the help of Baby Bus

C. we can’t use Ximalaya Reading to download book recording

We offer five kinds of courses. Each course has been designed to help students according to their needs.

Course l:General English

General English is designed to develop students’ basic communication skills in speaking and pronunciation,reading,listening,writing,grammar and vocabulary. Tuesday to Friday:9:00 am to 11:00 am,288 per week.

Course 2:Academic English

Academic English is for students who want to take the IELTS exam or for those who need to use English in a professional area. Monday to Friday:4:00 pm to 5:00 pm,320 per week.

Course 3:High School ESL

Why not make the most of your time studying in Australia with the help from TIES?We have High School ESL classes each week specifically designed for international students. Tuesday to Friday:8:00 am to 11:00 am,25 per hour.

Course 4:Night Classes

Do you want to improve your English and get the best possible results in your GRE test?We have two night classes each week designed to meet your needs. Tuesday and Thursday evenings:8:30 pm to 10:30 pm.60 per day.

Course 5:One on One

If you are interested in some One on One lessons with TIES teachers,we can design a course to meet your needs. One on One lessons can improve your English language skills more quickly and help students who want to take TOEFL. Tuesday and Friday:2:00 pm to 5:00 pm,80 per hour.

Please click here to learn more about the courses!

1.Which course would be helpful for an English beginner?

A. High School ESL B. General English

C. Night Classes D. Academic English

2.How much will you pay if you spend two weeks taking the Night Classes?

A. 360. B. 300.

C. 600. D. 240.

3.If you want to learn more about the courses mentioned in the text,you can .

A. make a call B. write an email

C. visit the website D. submit an application

4.When can you take Academic English?

A. Monday 4:00pm B. Sunday 4:00pm

C. Saturday 4:00am D. Friday4:00am

5.In which section can we find this passage?

A. Life style B. Opinion

C. Health D. Study

Today we eat on the go, at our desks and even in front of computers. We eat takeout, delivered and packaged meals. 1.

“Over the past three decades, people have started eating out more than ever before and purchasing more prepared foods at the grocery store, which tend to contain more fat, salt and sugar than their home-made foods,” noted US healthy living website Spark People.

2. It encourages us to value the time we spend preparing, sharing and consuming food, as a recent USA today article put it. It all started in 1986 with the efforts of Slow Food’s founding father, Italian activist Carlo Petrini, who wanted to bring back food varieties and flavors that had gone dark in the face of industrialization.3. Now his idea is almost the mainstream.

Starting at the table, the movement promotes an unhurried way of life founded on the idea that everyone has a right to cooking pleasure, and that everyone must also take responsibility to “protect the heritage (遗产) of food, tradition and culture that make this celebration of the senses possible”, wrote The Phnom Penh Post.

4.. It means turning down the speed at which we eat and increasing the amount of time we spend dining together with other people,” Althea Zanecosky, spokeswoman for the American Dietetic Association, told The Huf fington Post.”5. Dinner table conversations keep families together,” noted the Belgian non-profit organization Greenfudge.

A. It is a way to bring back the social togetherness of yesterday.

B. It seems that we have adapted our foods to our fast-paced lives.

C. So the Slow Food Movement has occurred against this fast-food trend.

D. Slow Food doesn’t necessarily mean food that takes a long time to cook.

E. It is based on the idea that we should spend as much time as possible on cooking.

F. It’s not only the food itself but also the time we spend dining together that matters.

G. At that time, he asked people to follow a more sustainable (可持续的) living model.

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