1 . Do you think you have what it takes to be a successful scientist? A successful scientist is generally a good observer. He makes full _____of the facts he observes. He doesn't accept ideas which are not___on obvious facts, and therefore__ to accept authority as the only truth. He always checks ideas__ and makes experiments to prove them.

The rise of modern science may perhaps be considered to__ as far back as the time of Roger Bacon, the wonderful philosopher of Oxford, who lived between the years 1214 and 1292. He was probably the first in the Middle Ages to __that we should learn science___observing and experimenting on the things around us, and he himself __many important truths.

Galileo (1564－1642),___，who lived more than 300 years later, was the greatest of several great men in Italy, France, Germany, and England, who began to show how many important ___could be discovered by observation by degrees. Before Galileo, learned men believed that large bodies ___more rapidly towards the earth than small ones, __ Aristotle said so. But Galileo, going to the ___of the Leaning Tower of Pisa, let fall two __ stones and proved Aristotle was wrong. It is Galileo's __ of going direct to nature, and proving our __ and theories by experiment, that has____all the discoveries of modern science.

What __ those people good scientists? From the example of Galileo, we know clearly that ___scientists are those whose observations have___ better results.