2007年3月5日，温 * * * * 在政府工作报告中指出，今年将在全国农村全部免除义务

下列结构中，受损后可产生感音性耳聋的有（）.

A.听骨链

B.咽鼓管

C.螺旋器

D.血管纹

KerleyB线最常见于哪种疾病()

A．肺癌

B．肺结核

C．心房间隔缺损

D．二尖瓣狭窄

E．慢性支气管炎

For each blank in the following passage there are four words or phrases marked A, B, C and D.  Fill in each blank with the word or phrase that best fits the context.

To advertise effectively today, you must abandon the old-school idea of “reaching the masses”. All advertising is local and personal. The key to effective advertising today is to focus on the   50  .

Some are the   51   ways every advertiser could work out. You can print a specific offer of your goods or service on door-hangers and place them on doorknobs in your area. Door-hangers on doorknobs will produce results in direct   52   about the strength of your offer. If you need to reach the drivers, flyer (宣传单) under windshield (挡风玻璃) wipers may have better effect than door-hangers. Imagine, how   53   if you hire someone to be a walking ad or launch a T-shirt advertising,   54  , you can print your products on T-shirts of your   55  . In the early 1970s “Hamp Baker says Drive with Care” was spray-painted on cars, which was a public service ad. Ever since, spray-painted sign has become more and more   56  .

More grand ways are as follows: virtual showroom. Build a website to   57   a virtual showroom. Use it when people call to ask   58   about your company, your products or your services. Also you can even use an old slide projector to put on a nighttime show. They’re   59   effective, and in the long run, cheap. Nothing is quite as powerful as a public   60   that seizes the public’s attention. You can invite a band to give a performance.

61   , you can hire famous models to show it vividly.

Nothing screams “expert” quite as loudly as a book written about a subject. You simply can’t   62   the power of your name on the cover of a book. You might only sell a few copies online, but the copies you give away in your town will make you a fortune. You won’t make money on the book. You’ll make it because of the book.

Of course, word-of-mouth is the best way to promote your   63  . Friends and past customers recommend your products to their family, friends and colleagues. Word-of-mouth works because the   64  is based on previous positive experiences.

50.   A. content                  B. product                           C. individual               D. style

51.   A. strange                  B. common                         C. amusing                D. perfect

52.   A. description           B. decision                          C. discussion             D. permission

53.   A. stupid                     B. funny                               C. impressive            D. ridiculous

54.   A. that is                   B. first of all                        C. as a result             D. generally speaking

55.   A. customers            B. employers                      C. consumers            D. employees

56.   A. expensive              B. valueless                        C. popular                  D. meaningless

57.   A. refer to                  B. serve as                          C. stand for               D. keep off

58.   A. location                 B. business-hours             C. salary                     D. details

59. A. unbelievably         B. consequently                 C. accidentally          D. occasionally

60.   A. speech                            B. sport                                C. debate                            D. performance

61.   A. For example         B. Moreover                       C. However               D. To be exact

62.   A. create                    B. change                                     C. imagine                 D. overuse

63.   A. production            B. friendship                       C. management       D. business

64.   A. information          B. relationship                   C. pronunciation     D. achievement

女性，46岁。右上后牙进食时有时产生剧烈疼痛3个月余。无自发痛。口腔检查：右上5远中邻面深龋洞，有大量软垢，牙石堆积，探诊浅探不痛，深探剧痛。去除腐质可见穿髓孔，温度刺激试验敏感。最佳治疗方案是（）

A.塑化术

B.直接盖髓术

C.牙髓切断术

D.根管治疗术

E.开髓引流

I．设反应①Fe(s)+CO₂(g)  FeO(s)+CO(g)的平衡常数为K₁。

反应②Fe(s)+H₂O(g) FeO(s)+H₂(g)的平衡常数为K₂，

在不同温度下，K₁、K₂的值如下：

T(K)	K1	K2
973	1.47	2.36
1173	2.15	1.67

(1)现有反应③CO₂(g)+H₂(g) CO(g)+H₂O(g)，这是一个     (填“吸”或“放”)热反应，要使平衡③向右移动，可采取的措施有      (填序号)。

A．缩小反应容器容积

B．扩大反应容器容积

C．降低温度

D．升高温度

E．使用合适的催化剂

F．设法减少CO的量

(2)若反应Fe(s)+CO₂(g) FeO(s)+CO(g)在温度T₁下进行；Fe(s)+H₂O(g) FeO(s)+H₂(g)在温度T₂下进行，已知T₁>T₂，且c(CO₂)>c(H₂O)(其他条件均相同)，则两者的反应速率       (填序号)

A．前者大    B．后者大    C．一样大  D．无法判断

II．(1)水的电离平衡曲线如图所示，若A点表示25℃时水的电离达平衡时的离子浓度，B点表示100℃时水的电离达平衡时的离子浓度。则100℃时1 mol·L^－1的NaOH溶液中，由水电离出的c(H^＋)＝________mol·L^－1，K_W(25℃)________K_W(100℃)(填“>”、“<”或“＝”)。25 ℃时，向水的电离平衡体系中加入少量NH₄HCO₃固体，对水的电离平衡的影响是________(填“促进”、“抑制”或“不影响”)。

(2)电离平衡常数是衡量弱电解质电离程度强弱的量。已知如表数据。

化学式	电离平衡常数(25℃)
HCN	K＝4.9×10－10
CH3COOH	K＝1.8×10－5
H2CO3	K1＝4.3×10－7、K2＝5.6×10－11

 

①25℃时，有等浓度的NaCN溶液、Na₂CO₃溶液、CH₃COONa溶液，三种溶液的pH由大到小的顺序为                  ____。

②25 ℃时，相同浓度、相同体积的CH₃COOH溶液和NaOH溶液混合， 则混合溶液中c(Na^＋)________c(CH₃COO^－)(填“>”、“<”或“＝”)

③向NaCN溶液中通入少量CO₂，所发生反应的化学方程式为_______________________________。