问题详情：
According to German researchers, forcing people to be happy and polite all the time is likely to make them sick. They believe most at risk are air hostesses, call center operators, waiters and other workers in close contact with the public.
Professor Dicter Zapf, a researcher into human emotions at Frankfurt University, said false friendliness led to depression, stress and a lowering of the immune(免疫) system. This can lead to more serious illness such as high blood pressure and so on.“Every time a person is forced to repress his true feelings, there are negative consequences for his health,”said Professor Dieter Zapf.
In order to reach these conclusions, for over two years, 4,000 volunteers including shop workers and air hostess, were put in an imaginary call center and abused by customers. Some of the participants were allowed to answer back, while others had to be polite and friendly all the time.
Those who stood up to clients(顾客) had a rapid heartbeat for a brief period, but for those who had to remain friendly, their heart was still racing long after the client had hung up.
The conclusion reached by the researchers was that“being friendly against one's will causes nothing but stress”.
Professor Zapf said, “We are all able to control our emotions, but it becomes difficult to do this over a long period as air hostesses are forced to on long flights.”
“These people need space away from the passengers where they can be on their own and let their feelings run free. We have to get away from the ‘customer is king’ attitude and show more respect to those working in the service industries.”
32. Who are most at risk when forced to be polite all the time?
A. Those connected with the public. B. Those in service industries.
C. Those with high blood pressure. D. Those working at the airport.
33. According to Professor Dicter Zapf, false friendliness can _____.
A. cause conflicts among people B. improve people’s relationship
C. control high blood pressure D. lead to more serious illnesses
34. What can be inferred from the text?
A. About 4000 voluntary students took part in the research.
B. Those allowed to answer back had a slow heartbeat.
C. Those forced to remain polite are likely to have heart problems.
D. Air hostess should be allowed to lose their temper on long flights.
35. What is the main purpose of this text?
A. To tell people to take the “customer is king” attitude.
B. To persuade people out of working in service industries.
C. To appeal to people to respect those in service industries.
D. To remind people in service industries to control their emotions.
【回答】
BDCC
知识点：阅读理解
题型：阅读理解