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    1.市场上供应的灯泡中，甲厂产品占70%，乙厂占30%，甲厂产品的合格率是95%，乙厂产品的合格率是80%，则从市场上买到一个是甲厂生产的合格灯泡的概率是　　　 .

    答案　 0.665

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    35．The man was observed　　　 into the manager’s office and help himself to everything valuable．

    A．slip　　 B．slipping　　 C．to slip　　 D．slipped

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    34．How disappointed the students were when　　 that their English teacher would not came to their English evening!

    A．informing　　 B．informed　 C．being informed　 D．to be informed

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