某校化学课外小组用硫酸亚铁废液(含少量硫酸铜和稀硫酸),制备硫酸亚铁晶体并进行如

题型:填空题

问题:

某校化学课外小组用硫酸亚铁废液(含少量硫酸铜和稀硫酸),制备硫酸亚铁晶体并进行如下实验.制备硫酸亚铁晶体主要的操作流程如下:

请根据题目要求回答下列问题:

(1)上述操作过程中用到的玻璃仪器有:①烧杯、②玻璃棒、③酒精灯、④温度计、⑤______.

(2)加入过量A的目的是______.

(3)草酸亚铁常用作照相显影剂,用于制药工业.实验室利用硫酸亚铁溶液和草酸铵[(NH42C2O4]溶液反应生成草酸亚铁沉淀来制备草酸亚铁.请写出硫酸亚铁溶液与草酸铵溶液反应的化学方程式______.

(4)草酸亚铁晶体(相对分子质量180)受热易分解,某课外小组设计如图的实验装置来检验其分解产物.

①该装置中最不合理的部分______(填字母),原因是______.

②改用正确装置实验开始后,B处变蓝,C处有白色沉淀,E处部分黑色粉末变为红色,说明草酸亚铁分解产生______(填化学式).

考点:化学反应方程式的书写文字表达式
题型:填空题

第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,掌握其大意,然后从36-55各题所给的四个选项(A、B、C和D)中选出最佳选项。

For as long as I can remember, I have been very_36____ at arguing with people. As soon as someone disagrees with me, I get angry because I feel __37__, like the other person is out to show that I am __38__. And for some reason, I hate being wrong! So my __39__ reaction is to get very defensive. I __40__ my voice, and I end up saying something I later __41__. Needless to say, the whole thing ends with me blaming __42__, and the other person feeling alienated(疏远) from me. This bothers me especially because my mother does the exact same thing and I hate __43__.

I have noticed this tendency in me for a long time now, __44__ I have never been able to stop. I did some __45__ management work with a therapist(治疗专家) a while ago, but because I moved and __46__ an advisor at school who can’t see me __47__, I have not been able to continue this important work. They tell you to stop and count to 10, __48__ your breathing, calm yourself down before you __49__. But that’s the whole problem. I could never think of __50__ myself until it was too late! The __51__ things had already come out of my mouth, and I was stuck picking up the pieces.

Right now the __52__ is urgent because my relationships with a wonderful boy is __53__ because of my being afraid of being wrong. He is closing himself off from me because I have hurt him, and __54__ I am no longer attractive as a woman with no confidence in myself and a bad temper. How do I stop ruining my relationships and hating myself? How do I stop __55__ being wrong?

36. A. bad                           B. good              C. hateful                     D. quick

37. A. disappointed          B. excited              C. attacked            D. ashamed

38. A. wrong                       B. foolish                 C. empty-headed    D. right

39. A. unusual               B. immediate       C. following          D. last

40. A. raise                          B. lower                C. keep                 D. change

41. A. remember                  B. regret                C. forget               D. realize

42. A. her                              B. him                  C. me                    D. myself

43. A .it                               B. her                   C. them                 D. us

44. A. so                      B. but                   C. although            D. however

45. A. health                        B. action           C. calmness           D. anger

46. A. headed to                   B. asked for           C. turned to          D. referred to

47. A. regularly                    B. carelessly          C. immediately      D. patiently

48. A. stop                           B. manage             C. keep                 D. control

49. A. say                            B. chat                  C speak                 D. talk

50. A. stopping                    B. managing          C. persuading      D. helping

51. A. hurtful                  B. surprising          C. colorful             D. dangerous

52. A. event                         B. thing                 C. affair                D. problem

53. A. in the way                  B. in the end          C. in danger           D. in the beginning

54. A. no doubt                    B. no problem     C. no wonder         D. no way

55. A. liking                        B. hating           C. finding              D. dealing

题型:填空题

农用地分等定级单元划分方法有()。

A.样地法

B.叠置法

C.因素法

D.多边形法

E.地块法

题型:填空题

经常通过人-土壤-人途径传染给人的疾病是()

A.伤寒、痢疾等肠道传染病

B.破伤风和肉毒中毒

C.流感

D.钩端螺旋体病

E.乙型脑炎

题型:填空题

没有划人军事禁区、军事管理区的军事设施,军事设施管理单位应当采取措施予以保护,军队团级
以上管理单位可以委托( )予以保护。

A.当地执法机关

B.公安机关

C.当地人民政府

D.当地人民群众

题型:填空题

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