单选题 Television, the modern wonder of electronics, brings the world into your own home in sight and sound. And the word "television" means seeing far. Television works in much the same way as radio. In radio, sound is changed into electromagnetic waves which are sent through the air. Experiments leading to modern television took place more than a hundred years ago. By the 1920s inventors and researchers had turned the early theories into working models. Yet it took another thirty years for TV to become industry. The influence of TV on the life of people is incalculable: it can influence their thoughts and their ways of life. It can also add to their store of knowledge. Educational TV stations offer teaching in various subjects. Some hospitals use TV for medical students to get close-up views of operations. At first television programs were broadcast in black-and-white. With the development of science and technology, the problem of how to telecast them in full color was solved and by the middle 1960s the national networks were broadcasting most of their programs in color. The programs that people watch are not only local and national ones. Since the launching of the first communications satellite, more and more programs are telecast "live" from all over the world. People in San Francisco were able to watch the 1964 Olympic Games in Tokyo. And live telecasts now come from outer space. In 1969, the first astronauts to land on the moon televised their historic "moon walk" to viewers on the earth. Since then, astronauts have regularly sent telecast to the earth.

单选题 The launching of communications satellites made it possible for people in San Francisco to______.

【正确答案】 C

【答案解析】解析：本题是一道细节题。根据题干可定位到文中最后一段中“自第一颗通信卫星成功发射以来，越来越多的电视节目可以在世界各国做实况转播。人们在美国旧金山就能收看1964年东京奥运会”。所以选项C正确。

单选题 The development of science and technology made it possible for television programs to______.

【正确答案】 A

【答案解析】解析：本题是一道细节题。根据题干可定位到文中第三段最后一句话“With the de—velopment of science and technology，the problem of how to telecast them in full color was solved and by the middle 1960s the national networks were broadcasting most of their pro—grams in color．”说明科学技术的发展解决了播放彩色电视节目的问题，所以选项A正确。

单选题 The word "incalculable" means______.

【正确答案】 B

【答案解析】解析：本题是一道词语理解题。这道题需要根据上下文来判断，从incalculable在文中所处的位置我们可以看出，是要考生推断电视对人们生活的影响。第三段的主题句是“The influence of TV on the life of the people is incalculable”后面解释用了“It can…”；“It also can…”通过这两个结构我们可以看出电视对人生活的影响是无法计算的。这道题还可以通过构词法来判断，calculate的意思是计算，因此“incalculable”的意思是“无数的，数不尽的”所以选项B正确。