问题
多项选择题
标准化的病史调查表的优点有：（）
A.保证系统的收集到每一位献血者的某一类情况。
B.防止工作人员在提问时遗漏某些问题。
C.在工作人员倾听献血者叙述时，提醒他们观察献血者的临床症状。
D.便于血站工作人员作出接受献血，暂缓献血或永久退出献血的决定。
答案
参考答案：A, B, C, D
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标准化的病史调查表的优点有：（）
A.保证系统的收集到每一位献血者的某一类情况。
B.防止工作人员在提问时遗漏某些问题。
C.在工作人员倾听献血者叙述时，提醒他们观察献血者的临床症状。
D.便于血站工作人员作出接受献血，暂缓献血或永久退出献血的决定。
参考答案：A, B, C, D
Directions: There are 4 passages in this part. Each of the passages is followed by ,5 questions or unfinished statements. For each of them there are 4 choices marked A, B, C and D. Choose the best one and mark your answer on the ANSWER SHEET with a single line through the center.
Passage One
| In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic (运动的) molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion. A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed. After a theory has been publicized, scientists design experiments to test the theory. If observations confirm the scientists’ predictions, the theory is supported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected. Science involves imagination and creative thinking as well as collecting information and performing experiments. Facts by themselves are not science. As the mathematician Jules Henri Poincare said: "Science is built with facts just as a house is built with bricks, but a collection of facts cannot be called science anymore than a pile of bricks can be called a house. " Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible solutions to the problem are formulated. These possible solutions are called hypotheses. In a way, any hypothesis is a leap into the unknown. It extends the scientist’s thinking beyond the known facts. The scientist plans experiments, performs calculations, and makes observations to test hypotheses. For without hypotheses, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories. |
Which of the following statements is supported by the passage
A．A scientist’s most difficult task is testing hypotheses.
B．It is better to revise a hypothesis than to reject it.
C．Theories are simply imaginary models of past events.
D．A good scientist needs to be creative.