The Science magazine reported that scientists had successfully grown meat in their laboratory by November, 2018. The news aroused heated discussion among the public. Is the meat safe? Is it any different? Why do we have to grow meat in a lab? People have tons of questions about this. And the scientists said that the lab-grown meat is produced when cells from animals are grown under lab conditions. It isn't like plant-based meat substitutes (替代品) made from vegetable proteins (蛋白质), since cell-based meat is grown from actual animal cells. This means that it is an animal product, so not suitable for vegetarians.

Is cell-cultured meat the same as ordinary meat? The muscle fibers (纤维) produced in the lab are the same as those found in steak, said leading researchers in this technology at Maastricht University in The Netherlands. But they pointed out that to get the same nutrient. (营养物) content that is found in red meat, they need to make some changes to the procedure. Scientists say they are also looking into changing the type of fat in lab-grown meat, for example.

Some people have concerns with growing meat in the lab. Some say this method of meat production would result in less land and water use. Others argue that growing meat in the lab would influence the environment more negatively than our traditional way of raising cattle. It would take massive amounts of energy resources to produce meat in this way, they say.

Some groups have petitioned (请求) the US Food and Drug Administration (FDA) to better define the term “meat”. They want to know if we are buying the traditionally produced type or the cultured variety. Hopefully we will see some labeling guidelines on these products before they show up in grocery stores. And that may be a few years away. Regulatory issues and cost - the first lab-grown hamburger patty (肉饼) cost $330,000 (2274,900 yuan) - could delay the arrival of cultured meat.

1.It’s reported that the scientists have successfully ______ in their lab in November.

A.grown meat B.eaten meat

C.got nutrient D.made a hamburger patty

2.According to the passage, the lab-grown meat ______.

A.is the same as ordinary meat

B.has the same muscle fibers as those in pork

C.has the same nutrient content as that in red meat

D.will perhaps have different types of fat

3.From the last paragraph, we can know ______.

A.the US FDA feels it necessary to label different kinds of meat

B.grocery stores have already been selling cultured meat to the public

C.it's for sure that no one will buy cultured meat in the future

D.cultured meat will meet challenge because of regulatory issues and cost

If you have dinner with people in the west, I think you must pay more attention to the table manners. Here are some good table manners for you.

When you eat something, try not to make a noise or burp (打嗝) at the table. Because people think that is not polite. People will say “Excuse me”when they want to burp.

Talking with food in the mouth is very rude. So you must eat the food quietly and slowly. If you eat too fast, people think you are rude too. Do not talk with others when you have food in your mouth.

It is good to eat all the food on your plate. This means you like the food very much. Remember to say the food is nice. And this can make the host (主人) very happy. When you finish eating, you can place your knife and fork together.

1.The topic of this passage is about ________ in the west.

A.how to burp B.what to eat

C.school rules D.table manners

2.People will ________ when they want to burp.

A.go out of the room

B.stand up and close their mouth

C.say “excuse me”

D.place their knives and forks together

3.If you eat the food ________, people will think you have good manners.

A.quietly and slowly

B.loudly and fast

C.quietly and fast

D.loudly and slowly

4.when you have food in your mouth, ________.

A.you can talk with others loudly

B.do not talk with others

C.do not drink anything

D.you can sing loudly

5.According to the passage, which of the following is good?

A.To make a noise.

B.To eat all the food on your plate.

C.To eat the food on the plate quickly.

D.To tell the host that the food is not nice.

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