Scientists have made a major ____ in cancer research.
A．break-inB．breakthrough
C．breakupD．breakdown
4. B
句意為“科學(xué)家們?cè)诎┌Y研究方面取得了一次重大突破�！�。 make a breakthrough表示“取得突破”，為固定搭配。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

It was dark.We decided to       for the night at a farm house.
A．put awayB．put downC．put upD．put out

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

When they had finished playing,the children were made to ______ all the toys they had taken out.
A．put offB．put awayC．put upD．put out

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Some of the students have already learned enough English to ________ a conversation with a native speaker.?
A．go onB．carry on?
C．keep onD．hold on　?

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

His mother had thought it would be good for his character to ________ from home and earn some money on his own.?
A．ran awayB．take away?
C．keep awayD．get away ?

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Food supplies may ________ towards the end of the trip, so we can’t waste any food.
A．run outB．run upC．run inD．run away

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

The army officer ___ his men to fire as soon as the enemies came up.
A．requestedB．commandedC．beggedD．suggested

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

It’s ten years since the scientist _______ on his life’s work of discovering the valuable chemical.
A．made forB．set out?
C．took off D．turned up?

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

The captain said an apology to the passengers for the delay caused by bad weather.
A           B             C           D

查看答案和解析>>

同步練習(xí)冊(cè)答案