皮皮学，免费搜题
登录
搜题
【判断题】
听觉信号,长声为5 s,短声为1 s,音响间隔为1 s。A.
正确
B.
错误
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】His doctor says he will not be well again for several days. He will be staying in the hospital on Friday. ( so )
A.
His doctor says he will not be well again for several days，so he will be staying in the hospital on Friday.
B.
He will be staying in the hospital on Friday, so his doctor says he will not be well again for several days.
【简答题】He is late again today. I’ll ________ that he will not be late tomorrow. A) be sure B) hope for C) felt D) to be felt
【单选题】There is no doubt ______ he will not be admitted to the room.
A.
if
B.
whether
C.
that
D.
which
【单选题】新民主主义社会是一个过渡性的社会形态。新民主主义社会存在着五种经济成分,其中,属于半社会主义性质的经济成分是( )
A.
国营经济
B.
国家资本主义经济
C.
合作社经济
D.
个体经济
【单选题】What does the man mean?
A.
He will not be able to join them.
B.
He will bring his girlfriend along with him.
C.
His girlfriend will join them.
相关题目：
【单选题】There is no doubt ______ he will not be admitted to the room.
A.
if
B.
whether
C.
that
D.
which