The time has come we can make extensive use of nuclear energy.A.whenB.whichC.sin
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The time has come ______ we can make extensive use of nuclear energy.
| A.when | B.which | C.since | D.while |
试题答案
A
解析

The time has come ______ we can make extensive use of nuclear energy.
| A.when | B.which | C.since | D.while |
A
解析