北京市海淀区九年级第二学期期中练习(5)

55. ______ will get less fat gain according to the passage.

A. Younger adults who sleep for five hours or less

B. People who sleep more than 8 hours every day

C. Younger adults who are from Africa or America

D. People who sleep about six or seven hours a day

56. The underlined word ―that‖ refers to ______.

A. a fat gain B. sleep habits

C. too little sleep D. too much sleep

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