摘要： The origin of life on earth is question that interests astronomers. A. the; the B. the; a C. \ ; the D. \; a
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The origin of ____ life on earth is ____ question that interests astronomers.
[ ]
A. the; the
B. \; a
C. \ ; the
D. the; a
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B. \; a
C. \ ; the
D. the; a
The origin of ____ life on earth is ____ question that interests astronomers.（原创）
|
A．the; the |
B．\; a |
C．\ ; the |
D．the; a |
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The origin of ____ life on earth is ____ question that interests astronomers.（原创）
A. the; the B. \; a C. \ ; the D. the; a
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The origin of ____ life on earth is ____ question that interests astronomers.（原创）
| A．the; the | B．\; a | C．\ ; the | D．the; a |