Look at the list below of the uses of glass. According to the passage, state whether these uses exist today , will exist in the

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问题 Look at the list below of the uses of glass. According to the passage, state whether these uses exist today , will exist in the future or are not mentioned by the writer. In boxes 9 - 13 write
A if the uses exist today
B if the uses will exist in the future
C if the uses are not mentioned by the writer
optical computers

选项

答案B

解析
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