理工英语3 （新)

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The government believes that reforms can ____ more jobs.

It's sneaky ____ to get a taxi on such a rainy day. Let's take a bus instead.

It's best to ____ a reasonable amount of money in your AliPay account so that you can pay it out going through a lengthy verification process.

Digital devices are becoming smaller and ____ to carry.

I'm more afraid to expose my unborn baby ____ the danger.

It claims the robot can not only play poker, ____ beat human opponents.

The pollution may result ____ many diseases like cancer.

Today I'll be talking about the invention of the camera and photography. The camera is of ten thought to be a modern invention, but as early as 1727, a German physicist discovered that light hits darkens silver salts. Used as a camera, a big box was set up, and a small hole was cut in one side to let the light in; he made temporary pictures on the salt. Silver salts are still the basis of the photographic film today. Then a French scientist made the first permanent picture by using a special piece of metal which was covered with silver salts. A photograph made in 1826 still exists. The painter De Géré improved the process by covering the metal with a glass plate and placing the common salt which we can eat. This was in 1839, the official date of the beginning of photography. But the problem was that the printing of the photographs was not until other scientists developed the kind of photographic paper we now use that good prints were possible and photography became truly modern. In the 1870's, Matthew Brady was able to take his famous pictures in the American Civil War. In the 20th century, Georges Mann of the United States simplified film developing, and Dr. Edward Lane invented the so-called "Instant Camera" which uses self-developing film. If we say photography came into existence in 1839, it follows that it took more than 100 years for the camera to reach its present condition of technical refinement. What discovery was the basis of photography?

How was the first permanent picture made?

What does the speaker regard as the official date of the beginning of photography?

According to the speaker, why is Matthew Brady remembered today?

What did Doctor Edward Lane invent?

You jump into a car, tell it where you want to go, then sit back and let the computer take control. It seems like a dream in the future. It isn't. Many years such driverless cars are already with us. There is partial automation in many cars, such as intelligent braking, lane departure warning and automatic parking. These systems are there so that cars can pretty much drive themselves. No one noticed the introduction of cruise control. We've got collision avoidance, and we'll soon have automatic lane change. Improving this technology should make the roads safer. Machines are much better at following rules than humans. Road signs advise drivers to slow down to avoid creating jams. They are often ignored by drivers. But with a computer, driverless cars could also choose the best route to avoid traffic jams. Fewer jams will mean less stop-start driving. Maintaining smooth and constant speeds will improve fuel efficiency. Computers could also be programmed to take the green route, rather than the fastest one. Under computer control, cars could also travel much closer together. They can effectively "slipstream" one another and use less fuel to move them selves forward. They can even form multi-car "trains" going at high speeds. However, with driverless cars on the roads, there will be potential trust issues between people and machines. We could therefore see guard rails back on the sides of roads. This would be a backward step. Which of the following statement is the best title for the passage?

There is partial automation in many cars like ____.

Why improving the driverless technology would make the roads safer?

Which of the following statements is NOT true according to the passage?

Which of the following statements is TRUE according to the passage?

We used to have family entertainment time every weekend.

Somewastecanberecycledandreused, like paper.

You will pay for what you have done.

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