2013职称英语理工类A级概括大意测试（3）_第2页

　　5. People make constant efforts to improve __________.

　　6. A telstar is a satellite that _____________.

　　7. With the help of the telsar, events can be reported to listeners and viewers and almost _____.

　　A) at the same time as they occur

　　B) a basic necessity of life

　　C) sends out signals all the time

　　D) travels around the globe

　　E) the reception of their TV sets