皮皮学，免费搜题
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【单选题】
利用电话线路接入Internet客户端必须具( )A.
路由器
B.
调制解调器
C.
集线器
D.
网卡
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】如图所3号发光二极管的正极是( )端,负极是( )端。(备注:括号里选填e、f)
【简答题】An Englishman was once traveling in Italy. One day he went into a small restaurant to order dinner. He understood very little Italian and couldn’t read the menu(菜单). He knew the word for eggs, and so ...
【单选题】Jim who is now our English teacher once ________ as a manager in an international cooperation for 5 years.
A.
has worked
B.
had worked
C.
was working
D.
worked
【简答题】根据结构特点，疑问句可以分为是非问、（）、选择问和正反问。
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