Man has used metals for centuries in gradually increasing quantities, but it was

游客2024-08-23  10

问题 Man has used metals for centuries in gradually increasing quantities, but it was________ the Industrial Revolution that they came to be employed in really vast quantities.

选项 A、till
B、until
C、not until
D、not till

答案 C

解析 人类使用金属的数量在几百年里逐渐增加,但直到工业革命时,金属才真正被大量使用。强调句型题。题干是一个并列句,由but连接,前后是转折关系。后面的句子是强调句,强调句式为"it was+被强调部分+that+句子剩余部分”,被强调部分含not until结构,意思是“直到……”。所以C项为正确答案。
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