Car makers are spending a lot of money on electric cars. In the future, electric cars will replace petrol cars.     1     (environmental) believe this will reduce the amount of CO2 put into the atmosphere. A big problem for electric cars is charging the batteries. Some batteries in today's electric cars can take up to 12 hours     2     (charge) fully. However, a company says it has created a new battery that people can charge     3     just five minutes. This is the same amount of time it takes to fill a tank of gas with petrol. The new batteries     4     (develop) by the Israeli company StorcDot.

The new batteries could     5     (total) transform driving. They would mean electric cars would be able to travel as far as petrol cars. Many people with electric cars today suffer from     6     stress caused by worrying about the batteries     7     (run) out of electricity. A Store- Dot spokesperson said:“You're either afraid that you're going to get stuck on the highway, or     8    you're going to need to sit in a charging station for two hours.” The new batteries would end this     9     (anxious). “We're at the point of achieving a revolution in the electric vehicle charging experience. It means the switch from petrol cars to electric cars will happen much     10     (fast)” said the man.

China is pretty much obsessed with QR Codes, which were responsible for $8 trillion worth of business deals last year. No     1     (sign) show that they are slowing down. Businesses should look to China when     2     comes to comprehending just how far QR Code usage can really go.

China had long realized the     3     (convenient) of using QR Codes as a method of payment. WeChat is without a doubt the top App in China, especially     4     (consider) that 93% of the population there uses it. This App includes a function     5     (name) WeChat Wallet, and people in China usually pay through the QR Codes     6     are generated through WeChat Wallet, which needs to be connected     7     users’ bank account and then they can start spending immediately.

Basically every type of vendor is obtaining payments through QR Codes. They     8     (use) for bike-renting, grocery shopping, hotel reservation and many other things.

QR Codes are     9    (simple) so popular that even beggars are using them     10     (collect) donations!

In just 100 years, the world changed     1    (complete). Amazing     2      (discovery) were made in medicine, communications and transport,      3     to mention our knowledge of the world and space. Impossible     4     it is to choose the most important discovery, it’s possible to pick out some pioneers. Einstein     5     (become) world-famous when an ex-lawyer started work in California Hubble discovered mist ,     6     proved that the universe was larger than previously     7     (think). Before Fleming went on holiday, he left a dish     8    bacteria in it in his lab. When he returned, he saw a blue mould in the dish around which the bacteria      9     (destroy). The mould was the      10    (nature ) form of penicillin.

Electric vehicles are mostly by gas-powered cars. But more electric car     1     (model) will come out in the next few years. Governments,    2     (particular) in European countries and China, are pushing this change     3    (reduce) carbon emissions and fight global warming.

Keeping electric motors charged is cheaper than    4     (buy) gas. But how long does it take to charge an electric vehicle? There are several ways to charge electric vehicles and times range from minutes    5    half a day. The slowest way to charge is on a standard 120-volt (伏特) charger,    6    adds just a few miles of range per hour. For trips that involve hundreds of miles in a single day, drivers typically rely on DC fast chargers. These chargers are much more expensive to install and thus    7    (rare). For would-be buyers, the lengthy charge times can sound alarming. And convincing them to try their first electric vehicle    8    (be) a challenge for the auto industry.

Going electric is not only an eco-friendly goal    9    also a business reality, according to industry analysts. But even if the general path ahead is widely agreed on,    10    speed of the change is far from clear.