问题 选择题

下列命题:①对角线相等的菱形是正方形;②对角线相等且互相垂直平分的四边形是正方形;③一组邻边相等且对角线相等的平行四边形是正方形;④四边都相等,四角都相等的四边形是正方形.其中命题正确的有

A.4个

B.3个

C.2个

D.1个

答案

答案:A

根据正方形的判定定理,四个命题都是正确的,故选A.

完形填空

第二节完形填空(共20小题;每小题2分,满分40分)

Most people in school liked Gloria. So when she got sick,some boys 21 to visit her. But none of them wanted to 22 any money on a gift to bring along.

Then Willie said,“We can 23 some flowers from a 24. ”

Gloria will not know 25 they come from,and the dead man will not 26them.

Everybody was afraid,27 Willie.So he went alone and 28 some beautiful flowers.Then they went to Gloria’s 29,and the boys acted as if the flowers were from all of them,but 30 did not mind.

After their visit,Willie 31  the other boys,“It is a good thing that I was not afraid. Gloria 32  the flowers. ”

The other boys laughed. Gloria would not have liked the 33  if she had known they had come from a grave(坟墓).

That night,Willie was reading a book 34  his mother came into his room.“Willie,did you and other boys buy some flowers today 35  Gloria?”she asked.“There’s a man 36  asking for you,”she added. “He says that you didn’t 37    the flowers. ”

“What does he look 38 ?”Willie asked.

“That’s hard to say,”Willie’s mother answered. “He is all 39  with mud. ”

Willie,all of a sudden,turned 40 .

21. A. thought               B. asked         C. planned             D. took

22. A. keep                B. cost           C. take             D. spend

23. A. steal                B. make      C. buy               D. plant

24. A. shop                B. store        C. street            D. grave

25. A. how                 B. where       C. when                  D. why

26. A. miss                 B. lose         C. hate               D. love

27. A. beside        B. besides     C. including        D. except

28. A. saw                  B. thought           C. looked into        D. found

29. A. room                B. hospital    C. school               D. library

30. A. Gloria        B. some        C. Willie             D. nobody

31. A. ordered            B. asked       C. said to            D. explained

32. A. refused             B. liked        C. hated             D. missed

33. A. boys          B. flowers     C. secret             D. news

34. A. as             B. when        C. while             D. suddenly

35. A. to             B. for                C. on                 D. with

36. A. inside        B. outside     C. still               D. also

37. A. ask for       B. water       C. like               D. pay for

38. A. as             B. about       C. like                   D. for

39. A. painted        B. dressed     C. wrapped         D. covered

40. A. sad            B. red                C. pale              D. glad 

单项选择题