_______ he was 12, Einstein had learned advanced mathematics by himself.A．As soo
题型：不详难度：来源：
_______ he was 12, Einstein had learned advanced mathematics by himself.| A．As soon as | B．At the time | C．By the time | D．During the time |
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答案
| C |
解析
试题分析：考查连词：A．As soon as一…就，B．At the time在…那个时候，C．By the time到…时候为止，D．During the time在那期间，四个选项BD不能做连词，A的意思不对，选C，句意：到他12岁为止，爱因斯坦已经自学了高等数学。选C。 |
举一反三
Please tell me ______ you are getting on with your new classmates.| A．whether | B．how | C．what | D．where |
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