18．An explosion in a coal mine in Heilongjiang on Nov. 21, 2009______at least 106 workers dead.
| A．promoted | B．kept | C．left | D．Created |
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18．An explosion in a coal mine in Heilongjiang on Nov. 21, 2009______at least 106 workers dead.
| A．promoted | B．kept | C．left | D．Created |
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