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【判断题】
目录中无法实现文件共享。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】下列与光现象有关的说法中错误的是( ) A .手影是根据光的直线传播形成的 B .老花镜的镜片是用凸透镜制成的 C .照相机利用了凸透镜能成倒立缩小的虚像的原理 D .色光的三原色是红、绿、蓝
A.
B.
C.
D.
D
【单选题】Paul was feeling a bit ____ then, for he had no friends.
A.
active
B.
lone
C.
lonely
D.
selfish
【简答题】如图(a)所示电路，已知U s =2V，R 1 =R 2 =2Ω，非线性电阻的伏安特性为i=f(u)=2u 2 (u＞0)。
【单选题】He was by nature a sociable, chatty man and he had reckoned that his action would () produce conversation
A.
infallibly
B.
bounced
C.
concentrate
D.
acclamation
【简答题】Paul was feeling a bit ____ then, for he
had no friends.A. active B. lone C. lonely D. selfish
相关题目：
【单选题】Paul was feeling a bit ____ then, for he had no friends.
A.
active
B.
lone
C.
lonely
D.
selfish
参考解析：
知识点：
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