21、The scientist's discoveries were of great help to mankind.
A.a;the B.a;/ C./;/ D.the;the
科目:高中英语 来源: 题型:
The scientist's discoveries were of great help to mankind.
A.a;the B.a;/ C./;/ D.the;the
科目:高中英语 来源: 题型:
The scientist's discoveries were of ____________great help to ____________mankind.
A.a;the B.a;/ C.the;the D./;/
科目:高中英语 来源:广西河池市高中2009届高考模拟试卷(一) 题型:单项填空
The scientist's discoveries were of great help to mankind.
A.a;the B.a;/ C./;/ D.the;the
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