完形填空

　　　Can you imagine（想象）what life would be 　1　 if there were no telephone? You could not call 　2　　 　your friends on the phone and talk to them, If fire 　3　 out in your house, you could not call the fire department（救火队）. If somebody were 　4　　 　, you couldn't call a doctor.

　　　In our daily（日常）life we need to talk with each other. We do this 　5　　 　by speaking to others and listening to 　6　 they have to say to us, and when we are 　7　　 　to them we can do this very 　8　　 　. But, our 　9　　 　will not travel very far even when we 　10　　 　, and it is thanks to the 　11　　 　of the telephone that we 　12　　 　able to talk with one another 　13　　 　ask some-thing when we are in different places. We can 　14　　 　each other as clearly 　15　　 　we were in the same room.

　Alexander Graham Bell 　16　 this possible. He 　17　　 　all his spare time experimenting（实验）. He worked 　18　　 　hard in his 　19　　 　that he had 　20　　 　time to make money（挣钱）and was very poor at one time.