空间四边形ABCD中,E、F、G、H分别是AB、BC、CD、DA的中点,且AC⊥

题型:填空题

问题:

空间四边形ABCD中,E、F、G、H分别是AB、BC、CD、DA的中点,且AC⊥BD,则四边形EFGH的形状是______.

考点:平面的基本性质
题型:填空题

阅读下面的短文,从短文后各题所给的四个选项(A、B、C、D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

A young man was getting ready to gradually from college, for many months he bad 36 a beautiful sports car in a dealer’s showroom, and 37 his father cold well 38 it, he told him that was all he wanted.   

On the morning of his gradation day his father called him into his own study and told him how 39 he was to have such a fine son. He handed his son a beautiful gift box. 40 but slightly disappointed, the young man 41 the box and fond a lovely book, 42, he raised his voice at his father and said. ” 43 all your money you give me a book?” And rushed out of the hose 44 the book in the study 

He did not contact(联系)his father for a whole year 45 one day he saw in the strict an old man who looked like his father. He  46  he bad to go back home and see his father.   

When he arrived at his father’s hose, he was told that his father had been in hospital for a week. The moment he was about to  47  the hospital. he saw on the desk the  48  new book ,just as he had left it one  49  ago. he opened it and began to 50  the pages. suddenly, a car key 51  from an envelope taped behind the book ,it bad a lag(标签)with dealer’s name, the 52 dealer who had the sports car he bad 53 on the tag was the 54 of his gradation. and the 55  PAID IN FLL

36. A. expected.    B. enjoyed.       C. admired.       D. owned 

37. A. finding     B. proving         C. deciding        D. knowing

38. A. afford.     B. offer           C. keep           D. like

39. A. encouraged. B. comfortable     C. prod.          D. moved

40. A. Nervous     B. Serious         C. Careful         D. Curios

41. A. packed.     B. opened.        C. picked up       D. put aside

42. A. Angrily     B. Eagerly         C. Calmly          D. Anxiously

43. A. At          B. From           C. With           D. To

44. A. toasting     B. putting         C. forgetting      D. leaving

45. A. until       B. as              C. before          D. unless

46. A. learned .    B. realized.       C. recognized.     D. admitted

47. A. get to      B. search for      C. turn to         D. leave for

48. A. much        B. still           C. hardly          D. quite

49. A. year        B. month           C. week           D. day

50. A. clean       B. read.          C. turn            D. cont

51. A. lost        B. came            C. appeared.       D. dropped

52. A. old.       B. same            C. special         D. new

53 A. remembered.   B. desired.       C. fond.          D. met

54. A. Picture      B. place           C. date            D. met 

55. A. word.        B. information     C. date            D. card 

题型:填空题

1ar大约等于()Mpa。

题型:填空题

你估计此患者失血量约占全身血容量的百分之几

A.20%左右

B.50%左右

C.40%左右

D.20%~40%左右

E.<20%

题型:填空题

属于“母病及子”的脏病相传是()

A.心病及肺

B.心病及肾

C.心病及肝

D.心病及脾

E.以上都不是

题型:填空题

下列不符合肝硬化假小叶的病变特点的是()

A.假小叶内肝细胞排列规整

B.小叶中央静脉缺如、偏位或多个

C.肝细胞团内出现汇管区

D.增生的纤维组织分隔包绕肝细胞团

E.增生的纤维间隔中可见新生的小胆管

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