Sugar tastes sweet because of thousands of receptors on the tongue which connect the substance with the brain. The taste of sweetness is universally accepted as the most pleasurable known, although it is afructose. Abundant is the most common occurring sugar, (1)______ of which include fruit and honey. Sucrose, which supplies glucose to the body, is (2)______ from the sugar cane plant, and white sugar (pure sucrose) is used by food technologists to (3)______ sweetness in other substances. Approximately a dozen artificial sweeteners have been discovered; one of the earliest was Sorbitol from France. Manufacturers add large amounts of sugar to foodstuffs but never more than the (4)______ required to produce the optimum pleasurable taste. Surprisingly, this amount is similar for different people and in different cultures. No one has (5)______ discovered a way to predict whether a substance will taste sweet, and it was by chance alone that all the man-made chemical sweeteners were found to be sweet.

Over the next 20 to 50 years, it will become harder to tell the (1) _____ between the human and the machine. All, body (2) will be replaceable. Computers will function like the human brain with the ability to recognize feelings and respond in a feeling way. They will then produce fake people. We will then be able to create a machine duplicate of ourselves so we will appear to be alive long after we are dead. Maybe a few decades later, a way will be found to transfer our spirit, including our (2) _____ and thoughts, to the new body. Then we can choose to live for as long as we want. It might be expensive. When it becomes possible to do a spirit transfer, they will figure out (3) _____ to do them automatically. So we will be able to reside within whichever duplicate we want, whenever we want. Miniature robots will be built to travel through your blood stream and repair damage. Also, larger robots will be used when you are sick. When you have an upset stomach, you will (4)_____ a very small cherry tasting robot which will travel through your stomach taking video of the mess. It will be set up like a video game, so you can control the exploring and the selection of images. Then you can replay the video to help a doctor (5)_____ your illness, or to prove to your employer that you really, were sick

The site (2)_____ that a foreign English teacher can earn between 1,200- 2,200 USD a month in Vietnam, where the average annual income in 2016 was just 2,200 USD.

About half of them are trying to get qualifications and skills to help them with their jobs, the (5)______ are taking recreational subjects for personal satisfaction. Schools and community colleges arrange evening classes, and a catalog of courses is published by local boards of education.

In the (4)______of a recent report by the Commission on Achieving Necessary Skills, "A strong back, the willingness to work, and a high school diploma were once all that was necessary to (5)______ a start in America.

The interviewer wants to meet a human being, not a robot. Remember, the interviewer is genuinely interested in you, so the more you relax and are yourself, the more (5)______ you are to succeed.

We (4)______ well over three million tones of the stuff in Britain each year and, sooner or later, most of it is thrown away.

In the USA. For the first time, most people began to live in towns, and they found themselves with regular free time. They had more leisure time than ever before. This resulted in the need for organized entertainment. Suitable games developed or were invented, typically team games, in which the crowd could (4)_____ sides and become involved.

In speech, the coding system is the language like English or Spanish; the convention that one person speaks at a time may seem too obvious to mention. In fact, the signals (3)_____ in conversation and meetings are often (4)_____ .

He also telephoned his father at work, and then his grandmother, to explain what he had (2)_____ .

While waiting for these people to come, William looked after his 18–month– old sister. When ambulance man Steve Lyn went to the house, he was amazed. 'It's great that a young boy of six knew the right number to dial, and was able to give us the correct information. (3)______ of William's quick thinking,