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(   ) 3. ―Do you know        or not Mr. Johnson will come today?  

      —I'm not sure.

   A. if   B. whether   C. that   D. weather


3. B whether or not属固定搭配,如果or not放在后面,既可用if ,也可用whether

题目来源:2015仁爱英语同步练测考八年级英语上册 > Topic 3 The internet makes the word smaller.

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  China's tennis player Li Ting and Sun Tiantian took part in the women's doubles in the Athens Olympic Games on August 22nd,2004. All the Chinese felt very glad because it was the first historic (历史性的) gold medal for China from the Olympic tennis court.

  Li Ting,born on January 5th,1980 in Hubei,is 180cm tall and 72kg. She took part in many games and did very well. Her teammate Sun Tiantian was born in Henan on October 13th,1981. She is 175cm tall and 64kg. The two girls seldom go home because they have to train for many kinds of matches. They miss their families but they know training is more important than staying at home.

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