皮皮学，免费搜题
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搜题
【单选题】
蜗牛属于软体动物门的( )A.
瓣鳃纲
B.
单板纲
C.
腹足纲
D.
头足纲
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】Never before in greater need of modern public transport than it is today.has this city been (正确）this city has beenwas this citythis city was
A.
has this city been
B.
this city has been
C.
was this city
D.
this city was