Having bad feeling about world? “Cheer up.” says science writer Matt Ridley. “The world has never been a better place to live in, and it will keep on getting better both for humans and for nature.”{#blank#}1{#/blank#}

1 ) {#blank#}2{#/blank#}

    It is reported that there are more than ten billion different products for sale in London alone. Even allowing for the many people who still live in poverty, our own generation has access to more nutritious food, more convenient transport, bigger houses, and better cars. {#blank#}3{#/blank#} This will continue as long as we use these things to make other things. The more we specialize and exchange, the better off we'll be.

2)Brilliant advances

    One reason we are richer, healthier, taller, cleverer, longer lived and freer than ever before is that the four most basic human needs—food, clothing, fuel and shelter—have grown a lot cheaper. Take one example. In 1800 a candle providing one hour's light cost six hours' work. In the 1880s the same light from an oil lamp took 15 minutes' work to pay for. {#blank#}4{#/blank#} Today it's half second.

3 )Let's not kill ourselves for climate change

    {#blank#}5{#/blank#} A child that dies from indoor smoke in a village, where the use of fossil-fuel (化石燃料) electricity is forbidden by well-meaning members of green political movements trying to save the world, is just as great a tragedy as a child that dies in a flood caused by climate change. If climate change proves to be mild, but cutting carbon causes real pain, we may well find that we have stopped a nose-bleed by putting a tourniquet (止血带) around our necks.

A. Ridley calls himself a rational optimist—rational, because he's carefully weighed the evidence.

B. Overreaction to climate change could prove just as damaging to human welfare as climate change itself.

C. Shopping fuels invention.

D. And, of course, we earn more pounds and dollars than any who lived before us.

E. In 1950 it was eight seconds.

F. It's high time that we took immediate action to fight climate change.

G. Here's how he explains his views.

    In the digital age, copying someone else's words is easy, but getting caught copying is even easier. When Melania Trump recently spoke at the Republican convention, she used some of the same words that Michelle Obama had used at the Democratic convention in 2008. Within hours, news spread around the world with the claim that Melania Trump had plagiarized Michelle Obama's speech. Students and teachers at universities in the U. S. and elsewhere were shocked.{#blank#}1{#/blank#}

    What is plagiarism?

    {#blank#}2{#/blank#}That person could also be called a "literary thief' or a" plagiarist'.

    Why is plagiarism a serious problem?

    It's our own worst fear, to have that thing that we created stolen from us, and it's the same as our words. That thing that we created is essential to who we are.{#blank#}3{#/blank#}Academics are especially aware of the nature of plagiarism because their work is essentially the creation of ideas and putting them into words.

    {#blank#}4{#/blank#}

    One of the possible punishments for' plagiarism at U. S. universities is dismissal from the school. Students may fail a course or be given a letter of censure(谴责)that stays on their school record, Professors or researchers who plagiarize may damage or end their careers.

    Plagiarism is easy to find

    Before the digital age we live in, plagiarizing was harder. You had to write out the words you copied. But now anything can be copied and pasted. In the past, teachers would have to work hard to prove that work was copied.{#blank#}5{#/blank#}The plagiarism checking software programs used by many students and universities include Turnitin, Grammarly, Duplichecker, and Ithenticate. Nobody is going to get away with it.

A. How to avoid plagiarism

B. Consequences of plagiarism

C. Stealing our words is as serious as if stealing our child.

D. Nowadays, some software programs will help you avoid plagiarism

E. Plagiarism is to copy someone else's written work without giving them credit.

F. But nowadays, all you have to do is run a paper through a plagiarism detection software.

G. They learn from their early years in school that copying another writers words is wrong.

    Choosing a major is a very important thing in our life. However, at extremely challenging. So it's necessary to learn some simple tips that much easier.{#blank#}1{#/blank#}. And how does that choice affect your future career? We can help guide you in choosing a major.

    Your major is your primary field of study in your undergraduate (大学的）program. It is the subject in which you earn your bachelor's degree. After completing a list of general education courses, you spend the rest of the time studying one subject of your choice.{#blank#}2{#/blank#}.

    For many students, it's best to try out different classes to figure out a major you'll like，but you need to have a couple of solid choices.{#blank#}3{#/blank#},you should begin taking courses you are required to complete before graduation, so it will decrease your chances of needing to switch majors later  because you already know what to expect.

    {#blank#}4{#/blank#}, you should begin thinking about how your field will lead to a job as soon as possible. Consider clubs, research programs and part-time jobs related to potential career choices for your major.

    For more career-specific majors like nursing and engineering, the majority of your studies will include skills that can be used in a future job.{#blank#}5{#/blank#}. The sooner you begin working in a lab, on research projects or helping as a teaching assistant for a professor, the better you'll be able to figure out your career.

A. You have to think of ways to choose a major

B. Be sure that you choose a major that suits your interests

C. Once you have a better idea of which major you like best

D. While your major may or may not lead directly to a career

E. Do some research to find out which majors can help you get that job

F. Roughly one-third to one-half of your courses will be related to your major

G. However, you should still consider doing activities outside of the classroom to better prepare you

    Volunteering abroad is a mind-opening experience that exposes one to other cultures, languages and ways of life.{#blank#}1{#/blank#}, the volunteer learns to appreciate the gifts of his home culture, as well as the benefits of the new. These volunteer opportunities often offer additional professional benefits, as well.

    The Satisfaction of Altruism (无私)

    Any volunteer job instills a sense of "giving back." However, overseas volunteering can be truly meaningful in this area. People in foreign cultures understand that you might be giving up numerous creature comforts to help them out.{#blank#}2{#/blank#}.

    New Language Skills

    Overseas volunteers may not only learn a new language during their stay, they may also come to appreciate their native tongue all the more. Total being involved in the culture will require at least a conversational grasp of the language. Often, English speakers are called upon to teach English as a second language, which requires relearning often-forgotten rules of grammar and usage.{#blank#}3{#/blank#}.

    Better Manners

    If the expression "ugly American" rings a bell, know that overseas volunteering is an excellent cure for that particular problem.{#blank#}4{#/blank#}. The lessons may lead to the volunteer thinking twice about how their behavior appears to others in daily life.

    {#blank#}5{#/blank#}.

    Going to a foreign country for a volunteer experience is a huge boost (帮助) on a resume. Employers love to see a person that can think outside the box and work past their comfort zone. The added benefits of teamwork, foreign language knowledge, and plain old hard work also add polish (品味) to the volunteer candidate. Since business now happens on a global scale, the volunteer is armed with useful, and potentially actionable, information.

A. Professional Benefits

B. An expanded appreciation of different traditions

C. By experiencing day-to-day existence in an area of need

D. Because of this, the act of giving is even more touching and deep

E. This repeat education can lead to better English skills in the long run

F. Volunteers may taste fruits, plants and meats they've never experienced before

G. Volunteers receive a thorough education about movement, gestures, and conversation

Max Du won the Canada-Wide Science Fair. His project is a drone (无人机) to save people who go into cardiac (心脏的) arrest. Max got the inspiration during Christmas break last year. "I got a toy drone from my parents, but I couldn't fly it because it is snowy." Max said. "So I played with it at home, and it got me thinking how a drone could be used as an indoor robot that could help people."

About 35, 000 people have cardiac arrests in Canada each year. Most of those happen outside of a hospital, of whom fewer than 10 percent survive. Max believed a drone could offer faster support and life-saving medicine, but he had to build it himself to know for sure.

Testing his drone took about six months. Max's parents had to deal with their son's constantly flying and crashing in the home. Every time Max would create an exciting innovation, such as an extendable arm, it would add extra weight to his drone, causing it to break apart. Then Max would have to buy all new parts. Max tested using more lightweight materials until his design was more balanced.

Through trial and error, the 14-year-old boy finally got it right. His drone can open a door handle, fly in the air and then land softly on the ground. A new extendable arm can be released to administer a shot or hand a patient lifesaving medicine. A built-in camera could directly conference with an emergency response team whose members could monitor the patient remotely.

Max plans on applying for a patent (专利) so he can make connections in the health-care industry to get it made for real. He's spent his summer learning about artificial intelligence at California's Stanford University as one of 32 kids selected worldwide. He'll head next to the University of Pennsylvania to take a college-level robotics class before returning to high school in September.

Effective Ways to Protect Our Planet

We only have one earth. However, humans haven't been very good protectors of the earth over the years. To leave a fine planet for our children and future generations, we all need to take steps to develop better living habits. {#blank#}1{#/blank#}

Buy less. Cheap goods in the sales may make your life better, but few of those are essential. And they almost always end up in the trash can or are forgotten in the back of a. closet. So next time you're hesitating about buying or accepting a non-essential item, think over whether it will truly improve your life. {#blank#}2{#/blank#}

Turn waste into treasure. {#blank#}3{#/blank#} Not only does it keep items out of trash cans, but it can also prevent you from buying new items, which require lots of resources to produce. Moreover, children love making things. So instead of heading towards the craft store, check out your recycling bin first and improve your children's imagination.

{#blank#}4{#/blank#}Did you know it takes over 700 gallons of water to grow enough cotton to make just one plain T-shirt? Instead of going to the mall to buy new clothes, you can consider looking first in a secondhand shop or trading clothes. Second-hand shopping also applies to many other categories of consumer goods such as furniture, cars and children's toys.

Walk, bike or car sharing.According to the Environmental Protection Agency (EPA), a typical passenger vehicle emits (排放) about 4.6 metric tons of carbon dioxide (CO₂) per year. Thus, any amount of what you can cut back on will matter. For short trips, you can try walking or biking. {#blank#}5{#/blank#} If travelling on foot or by bike isn't practical, you can try carpooling with a friend, neighbour or coworker to the same destination.

A. Save water.

B. Choose second-hand stores.

C. If not, it's okay to just say, "No, thanks!"

D. And here are some ways to protect the environment.

E. Plastic bottles are a clear example of waste material.

F. In this way, you can get some exercise without going to the gym.

G. Creating something new with unwanted items is a good way to protect the environment.