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| 文章出处：学生大考试站 发布时间：2005-10-12 |
y got the instrument atthe other end of the room to give its answering spark.
Marconi now decided to show his father that there really was somethingin this idea of his, for Signor Marconi, who had made a large fortune inbusiness, had not a great deal of faith in his youngest son's science.
At last the apparatus was ready, and Guglielmo invited his father andmother to come to the laboratory.
Signor Marconi entered, his good-humoured face beaming."What is thisnew toy you have made, my boy?"he asked.
"Listen." the young inventor said, and he pressed a switch.
Faintly, in the lower part of the big house, an electric bell rang.
"Well?"his father inquired.
"There are no wires running to that bell. Don't you see what it means.Father? Messages can be sent through space without wires to carry them."
But Signor Marconi was not convinced."Let me take one of your machinesdown to the lawn. Then, if you can send me a signal, I'll believe you."he said.
Marconi took him at his word. A little later he was back in the lab, hishand on the morse key. Through the window he could see his father at thereceiver. The young man's heart thumped as he tapped ?- the test signal, S,which telegraphists use. He could tell by the expression on his father'sface that the message had got through.
That evening Signora Marconi talked to her husband and on the followingday Guglielmo was overjoyed to receive from his father 5,000 lire -- about??250 -- to help with his experiments.
71. According to Gaglielmo _______.
A) any spark could send ether waves to wherever it wanted
B) ether waves could be used to operate machines
C) messages could be sent by ether instead of wires
D) bigger sparks could travel a mile and send messages
72. In Guglielmo's opinion, the distance ether waves travel depends on
_______.
A) the force of a spark
B) the size of the room
C) the type of the machine
D) the way the machine is operated
73. Guglielmo was so taken up with the idea that _______.
A) he decided to put an end to his holiday
B) stayed up late wondering about it
C) he paid little attention to anything else
D) he didn't want to stay with his brother
74. His father didn't see the point of his invention till _______.
A) he heard the bell ring
B) he saw the apparatus
C) he lis
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