下面每个句子中均有1个词或短语划有下划线，请为每处划线部分确定1个意义最为接近的选项。

　　1、 Professor Taylor's talk has indicated that scienee has a very strong influence on the everyday life of non-scientists as well as scientists'.

　　A.motivation

　　B.perspective

　　C.impression

　　D.impact

　　2、 Poor health and lack of money may both be to educational progress roadblocks.

　　A.restraints

　　B.stains

　　C.scarcities

　　D.barriers

　　3、 Language teachers often extract examples from grammar books.

　　A.pull out

　　B.repair

　　C.takes

　　D.dig

　　4、 Many of Carson McCuller's characters are isolated, disappointed people.

　　A.solitary

　　B.gloomy

　　C.feeble

　　D.frugal

　　5、 In 1816 it seemed inevitable that Southern states would break away'from the Union.

　　A.strange

　　B.certain

　　C.inconsistent

　　D.proper

　　6、 Beef is an excellent material of iron.

　　A.beginning

　　B.storage

　　C.source

　　D.substance

　　7、 Her heart was filled with compassion for the motherless children.

　　A.sympathy

　　B.regret

　　C.wishfulness

　　D.sorrow

　　8、"I am not meddlihg. " Mary said mildly," I'm just curious. "

　　A.gently

　　B.shyly

　　C.weakly

　　D.sweetly

　　9、 The workers finally called off the strikes.

　　A.put off

　　B.ended

　　C.cancelled

　　D.participated in

　　10、 A long journey in cold weather is dreadfully_ tiring.

　　A.predictably

　　B.noticeably

　　C.terribly

　　D.unfortunately

　　11、 She could not formulate her. ideas in a few words.

　　A.state

　　B.argue

　　C.invent

　　D.announce

　　12、Since I have been ill,my appetite has diminished.

　　A.desire for exercise

　　B.desire for visitors

　　C.desire for sleep

　　D.desire for food

　　13、 The bricklayer is working on the house.

　　A.mason

　　B.electrician

　　C.plumber

　　D.carpenter

　　14、 The firemen were unable to control the blaze.

　　A.flower

　　B.blow

　　C.flame

　　D.stroke

　　15、 Do not waste time on insignificant points.

　　A.interesting

　　B.dull

　　C.unimportant

　　D.boring

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（实习编辑：高奕飞）