The first hamburger created by scientists in a lab has been recently presented in London. The burger
英语试题 07-21
The first hamburger created by scientists in a lab has been recently presented in London. The burger, which cost over 300,000 dollars to grow, comes from stem cells(干细胞) that were taken out of the shoulder of a cow.
It took food scientists three months to raise 20,000 tiny pieces of meat to create one single hamburger. Stem cells were reproduced and, over a period of time, created their own muscles. Mark Post，who is a scientist at a Dutch university and responsible for the project, has been researching this method for a long time. He says that the job was a difficult one because it was important to keep the cells healthy and not let any pollution get into them during the whole process.
Food experts who tasted the new hamburger said that it felt like meat but it was without fat, which normally changes the taste. Biting into it felt like a real burger, but it wasn't as tasty because salt and pepper were missing.
The experiment showed that creating food in a lab is a possible solution (解决办法) for the world's food problems. Large quantities of meat could one day be made without raising millions of animals around the world. Those who welcome such a method say that we cannot produce enough meat in the future and such a new method could be an alternative. But it will be a long time before consumers get to taste such a new hamburger at McDonald's or elsewhere. It would have to be made much cheaper and the time it takes to grow such a hamburger would have to be greatly reduced. Scientists are hoping to get food companies to spend money on this new technology. But many question marks remain. Taste, which was put aside in the first prototype(原型), must be improved to give a consumer the taste of real meat.
Meat grown by people could be a way of producing enough food for our growing population without killing animals. In addition, falling number of livestock (家畜) will cause less greenhouse gases. Animals produce about double the amount that we humans create. By the middle of the century the human population is expected to rise to 9 billion and the demand for food, especially meat, will rise.
28．The first hamburger comes from stem cells that were taken out of ________.
A, a fast food B, a part of an animal C, McDonald's D, the neck of a cow
29．What used to trouble Mark Post most in the lab was that ________.
A．it was very difficult to reproduce stem cells from a cow
B．it would take him a long time to collect enough stem cells
C．the stem cells must be kept clean and healthy all the time
D．the meat in the hamburger didn't have any fat in it
30.Which of the following didn't make the food experts satisfied about the hamburger?
A．Its taste B．Its color. C. Its shape. D．Its nutrition.
31. According to the passage, what will happen if Mark's method is widely used?
A．There will be fewer diseases among animals.
B．Animals can grow much faster and bigger than ever.
C．People will be able to eat meat with different tastes.
D．Greenhouse gases from animals will be greatly reduced.
答案BCAD
It took food scientists three months to raise 20,000 tiny pieces of meat to create one single hamburger. Stem cells were reproduced and, over a period of time, created their own muscles. Mark Post，who is a scientist at a Dutch university and responsible for the project, has been researching this method for a long time. He says that the job was a difficult one because it was important to keep the cells healthy and not let any pollution get into them during the whole process.
Food experts who tasted the new hamburger said that it felt like meat but it was without fat, which normally changes the taste. Biting into it felt like a real burger, but it wasn't as tasty because salt and pepper were missing.
The experiment showed that creating food in a lab is a possible solution (解决办法) for the world's food problems. Large quantities of meat could one day be made without raising millions of animals around the world. Those who welcome such a method say that we cannot produce enough meat in the future and such a new method could be an alternative. But it will be a long time before consumers get to taste such a new hamburger at McDonald's or elsewhere. It would have to be made much cheaper and the time it takes to grow such a hamburger would have to be greatly reduced. Scientists are hoping to get food companies to spend money on this new technology. But many question marks remain. Taste, which was put aside in the first prototype(原型), must be improved to give a consumer the taste of real meat.
Meat grown by people could be a way of producing enough food for our growing population without killing animals. In addition, falling number of livestock (家畜) will cause less greenhouse gases. Animals produce about double the amount that we humans create. By the middle of the century the human population is expected to rise to 9 billion and the demand for food, especially meat, will rise.
28．The first hamburger comes from stem cells that were taken out of ________.
A, a fast food B, a part of an animal C, McDonald's D, the neck of a cow
29．What used to trouble Mark Post most in the lab was that ________.
A．it was very difficult to reproduce stem cells from a cow
B．it would take him a long time to collect enough stem cells
C．the stem cells must be kept clean and healthy all the time
D．the meat in the hamburger didn't have any fat in it
30.Which of the following didn't make the food experts satisfied about the hamburger?
A．Its taste B．Its color. C. Its shape. D．Its nutrition.
31. According to the passage, what will happen if Mark's method is widely used?
A．There will be fewer diseases among animals.
B．Animals can grow much faster and bigger than ever.
C．People will be able to eat meat with different tastes.
D．Greenhouse gases from animals will be greatly reduced.
答案BCAD
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