Thomas Alva Edison didn’t “invent” the light bulb, but rather he ______ a 50 –y
题型：不详难度：来源：
Thomas Alva Edison didn’t “invent” the light bulb, but rather he ______ a 50 –year –old idea, which is not well –known. | A．improved upon | B．take down | C．put up | D．break away |
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答案
| A |
解析
| 题意：鲜为人知是的，爱迪生并没有发明灯炮，而是在其50年前的发明上改进了电灯泡（把灯丝寿命延长到13.5小时）。improve on/upon超过，改进；take down把……拆卸开；put up张贴，搭建；break away摆脱。 |
举一反三
You’d better ______ some hot water into the teapot in case the tea cools down. | A．add | B．fill | C．fill in | D．put |
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After retirement, Mr. Mike ______ drawing, which he had always loved but had not had time for. | A．took up | B．got up | C．help up | D．looked up |
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I tried my best to keep calm in face of the students, but the sweat on my forehead _____ me____.| A．gave; away | B．tuned; down | C．showed; out | D．shut; off |
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To get to the top of the mountain, we had to _______.| A．go some walking | B．do a lot of climbing | | C．walking a long way | D．doing a lot of climbing |
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More jobs ______ the school-leavers in the future.| A．will be supplied with | B．will be supplied to | | C．were to supply to | D．are supplied to |
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