Anvitha Vijay，who is only nine years old，has built two educational apps. One is Smartkins Animals，which helps many 【小题1】（child）identify more than 100 animals and 【小题2】 other is Rainbow Colors，which teaches kids colors.

With the help of YouTube videos，the young girl from Melbourne，Australia，learned codes（编码）at age 7 all by 【小题3】（she）. Soon，she was trying her hand at making apps.“When I first got my iPad，I 【小题4】（attract）immediately by all the apps on it，”she told TFK.“It wasn't long 【小题5】 I wanted to create my own.”

Anvitha's skills won her a scholarship to attend a big tech conference hosted by Apple in San Francisco，California. There，she got tips from the professionals and went to workshops 【小题6】 she learned about the latest software for app building. All that training led to an idea for a third app. This one，called GoalsHi，inspires kids 【小题7】（develop）good habits.

Anvitha's goal is to keep on 【小题8】 (create) technology that helps kids learn while they are having fun. But what's even more 【小题9】 (importance) to her is that the world sees the power of technology in kids' hands.“The more training we get in tech at an early age,”she says,“the 【小题10】 (good) chance we will have of becoming champions who will one day change the world.”

I'm Li Hua. Recently we had a discussion _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Best wishes！

Yours sincerely，

Li Hua

   Since 1964，colleges and universities in the U. S. have used Test of English as a Foreign Language，or TOEFL，to measure an international applicant's（申请人的）level of English. Universities in English-speaking European countries began using the International English Language Testing System，or IELTS，in 1989. These two tests have been the main choices for English ability testing in higher education admissions for international students until now.

In recent years，several companies have developed new English language tests that are low-cost and easy to use. And they aim to do more than just offer greater choices in the admissions process.

Founded in 2012, Duolingo creates software that teaches users many different languages, including English. In 2014, the company launched its own test of English language ability.

Jennifer Dewar works with Duolingo, helping to develop the test. She formerly worked as an admissions official at Washington University in St. Louis, Misouri. The school is one of hundreds of colleges, universities and other organizations in and outside the U. S. that now accept the test results for international admissions into their study programs.

Dewar says Duolingo created the test to lower the barriers to higher education for people worldwide, especially those in developing countries.

TOEFL and the IELTS cost about $ 300. They are given in a limited number of centers around the world. Some test-takers have to travel to take the tests, adding to the costs. Duolingo offers its test entirely over the Internet for $ 49. All test-takers need is access to a computer with a microphone，listening device and self-facing camera.

TOEFL，the IELTS and Duolingo measure a person's English reading，listening，speaking and writing abilities. But it takes about 45 minutes to complete a Duolingo test，compared to three or four hours for TOEFL or the IELTS. It is possible because Duolingo uses artificial intelligence（人工智能）to adapt to test-takers' abilities，using fewer questions to measure their skills.

   A solar-powered car that can be charged as it runs is being tested in Germany.

Munich-based manufacturer（制造商）Sono Motors has built the new type, named Sion, and will likely help the European powerhouse hit its national target of 1 million electric cars on the road by 2020.

Sono Motors has solar cells fixed into Sion’s bodywork, with a total of 330 solar cells built into the roof, bonnet and sides of the vehicle. These enable the vehicle’s battery to be charged when sunlight is hitting the solar cells, whether it is on the road，or parked in the sunny spot in a car park.

The solar-powered vehicle is set to be launched in Germany in 2019.

Sono Motors wants Sion to be universal and allows the car to be charged using solar energy as well as conventional outlets（电源插座）, so car owners aren’t left on cloudy days.

The firm has made a 2019 date for mass production，which will be undertaken by a European manufacturer. Some 6,500 people have already placed orders for the electric vehicle. Prices for Sion tend to start from € 16,000 next year. The all-electric vehicle will offer a range of around 250 km before the battery runs out completely and it needs recharging either by solar power or using a wall plug, the company said.

Sion was designed originally as an environmentally conscious car，but will also include a number of features designed around comfort to help it compete with other modern vehicles.

“We have a seat heater, air conditioning, and a large entertainment system where I can also connect my phone, which means I really have a full vehicle,” Laurin Hahn, co-founder of the company told Reuters.

   Chester Greenwood was freezing. It was in 1873 and Chester was _________ a new pair of ice skates. The 15-year-old was getting _________because he couldn't keep his ears _________ or protect them from the bitter cold. He tried wrapping a _________around his head but it was too _________and itchy. Besides，who can _________ with a scarf tied around their heads？

To _________his problem，Chester made two ear-shaped rings from wire and asked his grandmother to sew beaver fur and cloth _________them. Over the years his new invention，the earmuff，improved-a steel band was added，so it became _________and tiny chains were added so it would ____________in pockets. Finally Chester had his own ____________，Greenwood's Ear Protector Factory. He made a ____________providing ear protectors for the US soldiers during World War I.

Chester ____________over 100 products during his lifetime. Some of them are the wide bottom kettle，the spring steel rack，the folding bed，the shock absorber（减震器）that ____________today's airplane landing gear（起落架）and bearings to keep ____________from being pulled off，ensuring that they touch the ground safely. The Smithsonian Institution named Chester one of America's 15 ____________ inventors.

The town of Farmington, Maine, where Chester was born, has an annual holiday to ____________the inventor. December 21st is Chester Greenwood Day and people all over the state of Maine ____________in the celebration. Farmington has a parade on the first Saturday in December and everyone from kids to old people shows up ____________earmuffs. He invented over 100 products ____________Chester will always be remembered for inventing the earmuffs when he was 15.