What happened on January 27th, 1967? [br] [originaltext] Although it is impo

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问题 What happened on January 27th, 1967? [br]  
Although it is impossible to eliminate all risks from such a complex and experimental project, as the American space program, every precaution is taken to reduce the possibility of injury. Nevertheless, accidents do happen.
    The first major casualties occurred when, despite every precaution, fire broke out on the Apollo V capsule on January 27th, 1967. In spite of every effort to save them, three men died in this terrible accident. The program continued without pause, however, and there were no more serious injuries until 1981. Then having successfully tested the engines, on an earlier occasion, a rehearsal for the actual launching was held. Not knowing that an engine chamber was full of Nitrogen gas used to clean the motor, 6 technicians entered for routine work after the final rehearsal had been declared successful. They collapsed as soon as the gas entered their lungs. One man died, and the others were very ill. Although everyone involved was shocked and grieved by this apparently unnecessary accident, preparations continued for the actual launching later that year. However hard we try, accidents are bound to happen. Whenever a new and challenging project is undertaken, it seems to be the price of progress.

选项 A、Accidents are unavoidable.
B、Accidents can be avoided.
C、Human beings are always careless.
D、There should be more precautions.

答案 A

解析 录音结尾提到,不论我们怎样努力,事故总是不可避免的,可知A为答案。
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