典型试题自测短文1-英语听力

[00:05.018] Although it is impossible to eliminate all risks from such a complex and experimental project as the American space programme [00:13.476] Every precaution is taken to reduce the possibility of injury. [00:17.663] Nevertheless, accidents do happen. [00:20.733] The first major casualties occurred when, [00:23.633] Despite every precaution, fire broke out on the Apollo five capsule on January 27th, 1967. [00:32.084] In spite of every effort to save them, three men died in this terrible accident. [00:37.653] The programme continued without pause, however, [00:40.697] And there were no more serious injuries until 1981. [00:44.956] Then, the engines having been successfully tested on an earlier occasion, [00:50.196] A rehearsal for the actual launching was held. [00:53.630] Not knowing that an engine-chamber was full of nitrogen gas, used to clean the motor, [00:59.217] Six technicians entered for routine work after the final rehearsal had been declared successful. [01:05.630] They collapsed as soon as the gas entered their lungs. [01:09.465] One man died and the others were very ill. [01:13.473] Though everyone involved was shocked and grieved by this apparently unnecessary accident, [01:19.256] Preparations continued for the actual launching later that year. [01:23.702] However hard we try, accidents are bound to happen whenever a new and challenging project is undertaken. [01:30.070] It seems to be the price of progress.