题目内容
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[单选题]
Wie viel Kilometer ist die Flugentfernung zwischen Beijing und Berlin ？北京到柏林的航线距离是多少公里？
A.7100
B.7200
C.7400
D.7300
提问人：网友jiangxiaodan
发布时间：2022-01-06
题目内容
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更多“Wie viel Kilometer ist die Flu…”相关的问题
第1题
The officials in Wuhan confirmed that Thailand has quarantined a Chinese man. It is the first case of the mystery strain of coronavirus to be found outside of China.
第2题
Hongkong is one of the ____ and it is ____ expensive city.
A、liveliest city; very an
B、lively cities, a quite
C、liveliest cities, quite an
D、lively city, a very
第3题
Face Masks May not Protect from Super-flu
If a super-flu strikes, face masks may not protect you. Whether widespread use of masks will help, or harm, during the next worldwide flu outbreak is a question that researchers are studying furiously. No results have come from their mask research yet. However, the government says people should consider wearing them in certain situations anyway, just in case.
But it's a question the public keeps asking while the government are making preparations for the next flu pandemic. So the Centers for Disease Control and Prevention (CDC) came up with preliminary guidelines. "We don't want people wearing them everywhere, " said the CDC. "The overall recommendation really is to avoid exposure. "
When that's not possible, the guidelines say to consider wearing a simple surgical mask if you are in one of the three following situations. First, you're healthy and can't avoid going to a crowded place. Second, you're sick and think you may have close contract with the healthy, such as a family member checking on you. Third, you live with someone who's sick and thus might be in the early stages of infection, but still need to go out.
Influenza (流行性感冒) pandemics (全国流行的) can strike (打击) when the easy-to-mutate flu virus shifts to a strain that people never have experience D. Scientists cannot predict when the next pandemic will arrive, although concern is rising that the Asian bird flu might trigger one if it starts spreading easily from person to person.
During the flu pandemic, you should protect yourself. Avoid crowds, and avoid close contract with the sick unless you must care for someone. Why can't mask added to this self-protection list？ Because they help trap virus-laden droplets flying through the air with a cough or sneeze (打喷嚏). Simple surgical masks only filter the larger droplets (小滴). Besides, the CDC is afraid？ masks may create a false sense of security. Perhaps someone who should have stayed home would don an ill-fitting (不合的) mask and hop on the subway instead.
Nor does flu only spread through the air. Say someone covers a sneeze with his or her hand, then touches a doorknob or subway pole. If you touch that spot next and then put germy hands on your nose or mouth, you've been exposed. It's harder to rub your nose while wearing a mask and so your face may get pretty sweaty under masks. You reach under to wipe that sweat, and may transfer germs caught on the outside of the mask straight to the nose. These are the problems face masks may create for their users.
Whether people should or should not use face masks still remains a question. The general public has to wait patiently for the results of the mask research scientists are still doing.
A. Reasons for Excluding Masks from the Self-protection List
B. Effort to Stop Flu Spreading
C. When to Use Face Masks
D. Guidelines on Mask Use
E. Warnings from the CDC
F. Danger of Infection through Germy Hands and Masks
Paragraph 2 ______
第4题
Shortages of flu vaccine are nothing new in America, but this year' s is a whopper. Until last week, it appeared that 100 million Americans would have access to flu shots this fall. Then British authorities, concerned about quality-control problems at a production plant in Liverpool, barred all further shipments by the Chiron Corp. Overnight, the U.S. vaccine supply dwindled by nearly half and federal health officials found themselves making an unusual plea. Instead of beseeching us all to get vaccinated, they' re now urging most healthy people between the ages of 2 and 64 not to. "This reemphasizes the fragility of our vaccine supply," says Dr. Martin Myers of the National Network for Immunization Information, "and the lack of redundancy in our system."
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Why is such a basic health service so easily knocked out? Mainly because private companies have had little incentive to pursue it. To create a single dose of flu vaccine, a manufacturer has to grow live virus in a 2-week-old fertilized chicken egg, then crack the egg, harvest the virus and extract the proteins used to provoke an immune response. Profit margins are narrow, demand is fickle and, because each year's flu virus is different, any leftover vaccine goes to waste. As a result, the United States now has only two major suppliers ( Chiron and Aventis Pasteur)--and when one of them runs into trouble, there isn' t much the other can do about it. "A vaccine maker can't just call up and order 40 million more fertilized eggs," says Manon Cox, of Connecticut-based Protein Sciences Corp. "There's a whole industry that's scheduled to produce a certain number of eggs at a certain time. "
Sleeker technologies are now in the works, and experts are hoping that this year's fiasco will speed the pace of innovation. The main challenge is to shift production from eggs into cell cultures--a medium already used to make most other vaccines. Flu vaccines are harder than most to produce this way, but several biotech companies are now pursuing this strategy, and one culture-based product (Solvay Pharmaceuticals' Invivac) has been cleared for marketing in Europe.
For Americans, the immediate challenge is to make the most of a limited supply. The government estimates that 95 million people still qualify for shots under the voluntary restrictions announced last week. That' s nearly twice the number of doses that clinics will have on hand, but only 60 million Americans seek out shots in a normal year. In fact, many experts are hoping the shortage will serve as an awareness campaign--encouraging the people who really need a flu shot to get one.
Shortages of flue vaccine show that ______.
A．America relies too much on foreign suppliers
B．the demand of flue vaccines is high this year
C．quality problem is a serious problem in flu vaccine production
D．the supply of flu vaccines is rather weak and America has no back-up measures to make it up
第5题
Im welchem Monat faellt der Regen am Meisten ?北京哪个月份降雨最多？
A、April 4月
B、Mai 5月
C、Juni 6月
D、Juli 7月
第6题
Woher kommt Karl von Drais? Karl von Drais 是哪国人?
A、Aus Deuschland 德国
B、Aus England 英国
C、Aus Holland 荷兰
D、Aus China 中国
第7题
Der kälteste Monat in Beijing ist:北京最冷的月份是
A、November 11月
B、Februar 2 月
C、Januar 1月
D、Dezember 12月
