完形填空(每空1词，共10分)
Of all the things we eat and drink，water is the  1 important. The human body can go 2  food for a long time，but two  3 three days without water could make people  4 .
A lot of people don’t understand how  5 water the human body needs  6 well and many people don’t drink enough，especially in  7 weather. Most people drink  8 they are thirsty but in fact they need more water，especially when they take  9 .
A man’s body is 65 to 75 percent of  10 . If we don’t have enough water. We fell tired and may become ill.
(   )1.A.more          B. most            C. less                D. least
(   )2.A.with          B. on              C. without             D. by
(   )3.A.or                B. and             C. of              D. but
(   )4.A.died          B. to die          C. dies                D. die
(   )5.A.many          B. little          C. few                 D. much
(   )6.A.work          B. working         C. to work             D. works
(   )7.A.hot           B. cold                C. cool            D. warm
(   )8.A.so                B. that            C. when            D. since
(   )9.A.fun           B. exercise            C. exercises       D. work
(   )10.A.blood            B. water           C. air             D. food