下列物质中，属于纯净物的是 A．石灰水 B．空气 C．生铁 D．水_爱下问搜题

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问题选择题

下列物质中，属于纯净物的是

A．石灰水

B．空气

C．生铁

D．水

答案

答案：D

题目分析：纯净物：由一种物质组成的，混合物：两种或多种物质组成的，故选D

完形填空

完形填空。

     Jane  1 her bedroom because she likes sleeping (睡觉). Michael likes the  2 room best for he often
watches TV and does many things there. Kangkang likes the dining room because she likes  3 . They are all
my good friends. 4 Sundays they often come to my home. I  5 a dining room.  6 a round table and four  7
in it. We eat meals and drink  8 and talk  9 English.  10 there any dining rooms in your house?

( ) 1. A. like
( ) 2. A. live
( ) 3. A. eat
( ) 4. A. On
( ) 5. A. have
( ) 6. A. There are
( ) 7. A. chair
( ) 8. A. meat
( ) 9. A. on
( ) 10. A. Is

B. liking
B. living
B. sleep
B. In
B. has
B. There be
B. desk
B. apple
B. about
B. Are

C. loves
C. dining
C. eating
C. At
C. am
C. There is
C. chairs
C. rice
C. at
C. Be

D. love
D. bedroom
D. dancing
D. For
D. is
D. Having
D. desks
D. tea
D. to
D. Am

单项选择题 A2型题

23岁，妊娠34周，BP150／90mmHg，24小时尿蛋白0．4g，下肢明显水肿，无头痛自觉症状，既往无高血压史，诊断为（）

A.妊娠期高血压

B.妊娠水肿

C.中度妊娠期高血压疾病

D.子痫前期

E.妊娠蛋白尿