With the advances of technology, plastics have taken the place of many materials. [ ] A. conventional B. optional C. artificial D. potential 题目和参考答案——青夏教育精英家教网—

题目内容

With the advances of technology, plastics have taken the place of many ________ materials.

[ ]

A. conventional
B. optional
C. artificial
D. potential

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The lady said she would buy a gift for her daughter with the _______.

A．20 dollars remained	B．remaining 20 dollars
C．remained 20 dollars	D．20 dollars to remain

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