皮皮学，免费搜题
登录
搜题
【单选题】
纯化水可采用( )保存A.
低温保存
B.
循环
C.
高温循环
D.
高温保存
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】______ the dog, I ______ in love with animals gradually.
A.
While walking , fell
B.
While walked, fell
C.
While is walking, am
D.
When was walked, was
【简答题】长方体和正方体的认识． 长方体有______个面，______的面完全相同．有______条棱，______的棱完全相等．有______个顶点． 正方体有______个面，______面完全相同．有______条棱，______棱长度相等．有______个顶点． 相交于同一顶点的三条棱的长度分别叫做长方体的______、______、______．正方体可以看成是______都相等的长方体．用集合...
【单选题】I met a good friend of mine while I on the street.
A.
walks
B.
walk
C.
was walking
D.
am walking
【单选题】While I was walking along the lake, I saw some fish _______ out of the water.
A.
jumped
B.
to jump
C.
jumping
【简答题】相交于同一个顶点的三条棱的长度分别叫做长方体的______、______、______．正方体是______、______、______都相等的长方体，也叫______．
【单选题】While I was walking along the lake, I saw some fish _____ out of the water.
A.
jumped
B.
to jump
C.
jumping
D.
are jumping
【单选题】While I _______ down the street, I _______ my classmates.
A.
was walking; met
B.
walked; met
C.
was walking; was meeting
D.
walked; was meeting
相关题目：