英语专业四级词汇与语法全真模拟练习55_大学英语单词

　　signal --- an indicator, such as a gesture or colored light, that serves as a means of communication

　　board --- a long, flat slab of sawed lumber; a plank

　　Simply to say, the usual collocation is traffic sign / road sign

　　答案：A

　　3.考点：词组

　　辨析：show up --- expose or reveal the true character or nature of: The master tried not to show the boy up as a thief.

　　show around --- conduct with direction: The guards showed the visitors around.

　　show off --- display in order to attract notice: She loves showing off.

　　show out --- take leave of a person: After the interview, the secretary showed the applicant out of the Board room.

　　答案：C

　　4.考点：易混淆词

　　辨析：sheet --- a flat thin piece of glass, paper etc.:

　　sheet of glass / paper / steel / metal / The roof is made of sheets of corrugated iron.

　　scrap --- a small piece : He made some pretty bags out of scraps of curtain material.

　　page --- one side of a leaf, as of a book, letter, newspaper, or manuscript, especially the entire leaf: tore a page from the book

　　slice --- a thin flat piece of food that you cut from a larger piece: Have a slice of bread and butter.

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