A professor of biology gave a talk to more than 1000 students on elephants livin
题型：不详难度：来源：
A professor of biology gave a talk to more than 1000 students on elephants living conditions and the dangers _______ them. | A．face | B．facing | C．faced | D．are facing |
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答案
| B |
解析
| 考查非谓语动词。facing them作定语，修饰living conditions and the dangers，故选B。 |
举一反三
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