皮皮学，免费搜题
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搜题
【单选题】
我们平时所用的搜索引擎、目录类检索工具是属于哪一种文献类型?( )A.
零次文献
B.
三次文献
C.
二次文献
D.
一次文献
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】They are ready to fight the enemy _____ the last drop of their _____.
A.
to; blood
B.
to; bloods
C.
for; breath
D.
for; time
【单选题】The battle lasted for a few hours and at last the enemy ________.
A.
was defeated
B.
were beat
C.
were won
D.
defeated