题目

健康人每天形成的原尿约有150L，而每天排出的尿液只有1.5L左右，主要原因是   （      ） A、消化作用      B、吸收作用  C、重吸收作用      D、滤过作用 答案：C 完形填空。 　　Look at the picture of    1    room.    2    are white and the windows are big. On the wall you can see    3    old photo of the family. Their mother is    4   . She is a teacher    5    English. She is    6    a white hat. Behind her    7   their father. He    8    very young. The boy with a pair of glasses is    9    brother. The twins sit on the floor. They   10   their parents. (     ) 1. A. a twins' (     ) 2. A. The wall   (     ) 3. A. a          (     ) 4. A. China        (     ) 5. A. in         (     ) 6. A. in         (     ) 7. A. are         (     ) 8. A. looks        (     ) 9. A. they     (     )10. A. look the same B. twin's B. A wall B. an   B. AmericanB. of B. on   B. sit   B. are   B. them    B. look at C. the twins'C. Walls    C. in         C. Englishman C. with       C. of         C. /          C. look       C. their     C. look like   D. a twins   D. The walls D. the       D. America   D. on        D. at        D. stands    D. am        D. theirs    D. look after