题目内容

— What does the fresh juice contain?

— ________of the juice ________ orange. It's very pure.

A. Four-fifths; are            B. Four-fifth; is          C. Four fifths; is

 

【答案】

C

【解析】

试题分析:英语中一般用基数词表示分数的分子,用序数词表示分数的分母。当分子是一时,分数的分母用单数形式,在表示分数时,当分数的分子大于一时,分数的分母要用复数形式。句意:鲜橘子汁含有什么?——果汁的五分之四是橘子。非常纯。由分数修饰的名词后面的谓语动词,与被修饰的分数保持一致,orange本句中是物质名词,不可数,故谓语动词用单数,选C。

考点:分数表达及主谓一致

点评:英语分数的表达规则比较固定,学习中应牢记这些基本规则。需注意的是,由分数修饰的主语后面谓语动词的数,和被修饰主语的单复数保持一致。

 

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During the day we work and play, and at night we sleep. Our body rests while we sleep. In the morning we are ready to work and play again. Our body grows most while we are asleep. Children who are tired usually need sleep. We can get better at our lessons after we have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our body needs plenty of air when we sleep. If we do not get enough fresh(新鲜的) air, we will feel tired when we wake up. While in bed we must not cover our head. Our lung(肺) needs to get enough fresh air. If we open our windows at night, we can have plenty of fresh air. Cool air is better than warm air. Boys and girls who want to be strong must get plenty of sleep. 

1. Our body grows most while we are        .

A. eating                           B. playing             C. sleeping            D. exercising

2. Too little sleep makes us        .

A. tired                             B. hungry             C. happy              D. grow

3. What may cause (促使) us to feel tired in the morning?           

A. Too much air during the sleep.      B. Not enough fresh air during the sleep.

C. Too much cold air during the sleep.  D. Too much sleep during the sleep.

4. How many hours of sleep should 9-year-old children have?           

A. 8 hours                        B. 9 hours            C. 10 hours          D. 11 hours

5. What doe s the lung need most?             

A. Fresh air.                      B. Covering.         C. Warm air.         D. Exercise.

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