_______ you work hard, you won’t solve this problem.
A．EvenB．AsC．UnlessD．Since
C
Even即使，甚至；As因為，由于；Unless除非……否則，如果不；Since
自從，因為。句意：除非你努力學習，否則你不能解決這道題。所以選C。
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：單選題

Allow children the space to voice their opinions,       they are different from your own.
A．as if B．even if C．unlessD．as though

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

_________ many times, but he still couldn’t understand it.
A．Having been toldB．Though he had been told
C．He was toldD．Having told

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

You will succeed in the end ________ you give up halfway.
A．even ifB．as thoughC．as long asD．unless

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Professor Tang didn’t give us a speech today．It was        he had a traffic accident on the way to school．
A．thatB．whenC．whyD．because

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

It wasn’t such a good present        my cousin had promised me.
A．thatB．asC．whichD．what

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

She is a crazy fan of this singer. ________ she listens to his songs hundreds of times, she will never get tired.
A．IfB．Unless ．C．As long as ．D．Even if

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The bus hit the huge stone by the road heavily _________ he could stop it.
A. after                B. before           C since             D. until

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

______ the task is difficult, they managed to complete it on time.
A．BecauseB．ThereforeC．AsD．Though

查看答案和解析>>

同步練習冊答案