题文
In 1990 , ________Belgian inventor by ________ name of Bakelite invented the first of the modern plastics.
| A．a; a |
| B．a; the |
| C．the; a |
| D．the;\ |
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In 1990 , ________Belgian inventor by ________ name of Bakelite invented the first of the modern plastics.
| A．a; a |
| B．a; the |
| C．the; a |
| D．the;\ |
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