题目
A.I
B.me
C.we
D.us
第1题
The climate changes have started with the dawn of agriculture.
A.Y
B.N
C.NG
第3题
In a sense, farmers began primitive genetic engineering (at the dawn of) agriculture, (which) they kept seeds (from) their best plants, gradually (improving) the quality of successive generations.
A.at the dawn of
B.which
C.from
D.improving
第5题
It was not until dawn ______ their way out of the forest.
A.when they found
B.that they found
C.did they find
D.that they didn't find
第6题
A.he felt the dawn of that day different
B.he didn't feel the dawn of that day different
C.he was sad that day
D.he wanted to find a wife that day
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