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1.法国科学家里昂最近发现一种只由四个中子构成的粒子,这种粒子称为“四中子”,也

有人称之为“零号元素”。下列有关“四中子”的说法不正确的是

A.该粒子不显电性                B.该粒子的质量数为4

C.该元素在元素周期表中与氢元素占同一位置    D.该粒子的质量比氢原子大

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19.The movie star was injured in a car accident before his performance,        made everyone at

present worried.

  A.who               B.that              C.what             D.which

  答案  D

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18.A terrible earthquake happened in that district at the end of 2004,          many people all over the world visited there.

  A.what              B.which            C.when              D.where

  答案  C

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17.It was in the stone house     was built as a school by local villagers     the boy

  finished his primary school.

  A.which;that          B.that;where      C.which;which       D.that;which

  答案  A

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16.It was on October 15          the Communist Party 17th Congress began,       was the biggest political meeting in five years.

A.which;that          B.what;which     C.which;who         D.that;which

答案  D

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15.-How much do you have in your pocket?

  -150 yuan,all of      came from my grandma.

  A.which             B.them             C.it                D.that

  答案  A

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14.I wonder if it was in the bookstore       I bought some books       I lost the keys.

  A.that;that        B.where;where        C.where;that      D.that;where

  答案  C

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13.Finally they arrived at a place,           sold cigarettes and other small articles.

  A.where             B.which            C.in which           D.what

  答案  B

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12.As a mother,I seldom give my children so difficult a job          they can’t do actively.

  A.that               B.as            C.which            D.if

  答案  B

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11.Some students think that learning a foreign language is slow and difficult-just think of the hours of hard work           they have spent learning it.

  A.which             B.when             C.while             D.in which

  答案  A

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