Unit 3 Inventors and inventions using language课时作业

Ⅰ.完形填空

　　Do you think you have what it takes to be a successful scientist? A successful scientist is generally a good observer. He makes full __1__ of the facts he observes. He doesn't accept ideas which are not __2__on obvious facts, and therefore __3__to accept authority as the only reason for truth. He always checks ideas __4__ and makes experiments to prove them.

　　The rise of __5__ science may perhaps be considered to __6__ as far back as the __7__ of Roger Bacon,the wonderful philosopher of Oxford,who lived __8__ the years 1214 and 1292. He was probably thefirst in the Middle Ages to suggest that we must learn science __9__ observing and experimenting on the things around us, and he himself __10__ many important truths.

　　Galileo (1564­1642), however, who lived more than 300 years later, was the greatest of several great men in Italy, France, Germany, and England, __11__ began to show how many important __12__ could be discovered by observation by degrees. Before Galileo, learned men believed that large bodies fell more __13__ towards the earth than small ones, __14__ Aristotle said so. But Galileo, going to the __15__ of the Leaning Tower of Pisa, let fall two __16__ stones and proved Aristotle was wrong. It was Galileo's __17__ of going direct to Nature, and proving our __18__ and theories by experiment, that has led to all the discoveries of modern science.

　　What __19__ those people good scientists? From the example of Galileo, we know it clearly that successful scientists are those whose observations have __20__ better results.

　　篇章导读：本文是一篇议论文。作者通过实例阐明自己的观点：一个科学家应该是一个很好的观察者，不能盲目相信他人，应该通过观察和实验来获得正确的观点和理论。

1．A.use B．time