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【单选题】
改革前中国事业单位管理体制的特征不包括A.
非经济性
B.
国有化
C.
行政化
D.
政治性
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反馈参考答案：
举一反三
【简答题】通常把______的透镜叫凸透镜，凸透镜对光线有______作用；把______的透镜叫凹透镜，凹透镜对光线有______作用．
【单选题】关于透镜，下列说法中正确的是（ ）
A.
凸透镜和凹透镜都有焦点，凸透镜有实焦点，凹透镜有虚焦点
B.
凸透镜对光有会聚作用，因此通过凸透镜的光都一定会聚在焦点
C.
凸透镜只对平行光有会聚作用
D.
凹透镜只对平行光有发散作用
【简答题】Although he is o____-looking, yet he is well received by his workmates.
【单选题】全双工以太网传输技术的特点是( )。
A.
不能同时发送和接收帧，网段最长距离不受限制
B.
不能同时发送和接收帧，网段最长距离受限制
C.
能同时发送和接收帧，网段最长距离不受限制
D.
能同时发送和接收帧，网段最长距离受限制
【单选题】Mr. Smith works with an auto company, but he _________ for this industrial exhibition, since he is on leave. [ ]
A.
has worked
B.
worked
C.
has been working
D.
is working
【简答题】根据首字母或汉意填空，每空一词。 1. Zhu used to be shy, but now he is o______. 2. I don't like speeches. I feel n______ talking in front of many people. 3. When I began to sing，he laughed and made me very ____...
【单选题】( )—What do you think of your English teacher?
A.
like him very much. He is ________ handsome ________ hard－working.
B.
Either; or
C.
neither; nor
D.
Not; or
E.
not only; but also
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