皮皮学，免费搜题
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搜题
【多选题】
下列选项中,对长尾关键词特点的描述正确的是A.
搜索量小
B.
竞争程度小
C.
转化率高
D.
搜索频率不稳定
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】当某种行为出现后,给予某种带有强制性、威胁性的不利后果,以期减少这种行为出现的可能性或消除该行为,这种强化方式是( )
A.
正强化
B.
负强化
C.
惩罚
D.
自然消退
【单选题】当某种行为出现后,给予某种带有强制性、威胁性的不利后果，以期减少这种行为出现的可能性或消除该行为,这种强化方式是 。
A.
惩罚
B.
正强化
C.
自然消退
D.
消极强化
【单选题】- Will you please write your note on 'Red Apple' and _____ it to me tomorrow morning? - What about the day after tomorrow? My computer doesn't work well now. [ ]
A.
take
B.
bring
C.
e-mail
D.
give
【单选题】I saw she ______her children to school yesterday morning.
A.
send
B.
sending
C.
to send
D.
sent
【单选题】当某种行为出现后,给予某种带有强制性、威胁性的不利后果,以期减少这种行为出现的可能性或消除该行为,这种强化方式是
A.
消极处理
B.
负强化
C.
正强化
D.
自然消退
【简答题】When I saw her smiling,I knew she (have)good news of her son.
【单选题】— Where is Lily, Lucy? I cannot find her anywhere. — She have been off long. I saw her clean the window just now. [ ]
A.
shouldn't
B.
can't
C.
mustn't
D.
needn't
相关题目：
【单选题】I saw she ______her children to school yesterday morning.
A.
send
B.
sending
C.
to send
D.
sent