血清钾增高对心脏的主要影响是：（） A.心肌兴奋性增强 B.心肌于收缩期停搏 C.心

通常将摆脱电流认为是（）。我国将人体安全电流的数值确定为：交流50—60Hz、10mA，直流50mA。

患儿1岁，可见肋骨串珠，肋膈沟，手镯和脚镯，前囟为1.5cm×1.5cm，血钙为2.0mmol/L，血磷为0.9mmol/L， X线可见千骺端临时钙化带消失呈杯口样改变，诊断为

A．甲状旁腺功能低下

B．软骨营养不良

C．低血磷抗D性佝偻病

D．维生素D缺乏性佝偻病

E．肾性佝偻病

全国人大及其常委会和国务院行使不同的职权，在下列选项中：①批准省、自治区和直辖市的建置；②批准省、自治区和直辖市的区域划分；③决定全国和个别省、自治区、直辖市的紧急状态；④依照法律规定决定省、自治区、直辖市的范围内部分地区进入紧急状态。国务院行使的职权是：( )。

A．①②③④

B．②③

C．①②④

D．②④

III  完型填空       15%

Reports about stolen virtual property(虚拟财产), (for example, the money that is gained through Web games,) are becoming increasingly frequent.

Who is responsible(负责任的) for this?

“Virtual property theft(偷窃) is __31__ today all over the world,” __32__ professor Greg Lastowka, an American specialist in internet law.

Though a few cases have managed to make it to the courtroom(法庭), most of the time __33__ are not reported or not followed up. “local police are __34____ confused by virtual theft, thinking it has no real value,” says Lastowka.  “But virtual items(虚拟物) can be sold easily for__35___ money, making it a “lucrative(赚钱的) opportunity for criminals(罪犯).”

___36____“theft”, “users in China whose virtual property is stolen can report it to the Internet department of the local public security bureaus(公安局),” says Tencent Mao. “We can cooperate（合作）with officials and offer technical __37____.”

But lawyers suggest that the companies involved have the obligation(义务) to safeguard consumers’ virtual property.  “__38__ they can’t prove they have done __39___ to protect the virtual property, they should bear the responsibility (担责任),” says Guo Qing, of Beijing’s Yingke Law Firm.

_40__themselves are advised to __41__ their virtual property. Mao suggests “not __42___ files from strangers, __43___going to websites with a bad reputation（名声）”. Changing __44___ every three months can ___45___ help.

31. A. happening           B.    happened        C. occurred            D. appearing

32. A. speaks                B. says                         C .talks                 D. reports

33. A. when                  B. which               C they                   D. it

34. A. seldom               B. hardly               C. often                 D. usually

35. A. real                           B. more                   C. much                  D. many

36. A. In search of         B. In case of           C. In time of     D Instead of

37. A. support               B. advices                     C. request          D. demand

38. A. If                       B. When                C. Because             D. As

39. A. better                 B. enough                 C. more                 D. less

40. A. They                  B. Users                   C. Those         D. Companies

41. A. have                   B. own                     C. protect              D. keep

42. A. receiving            B. accepting              C. getting              D. accept

43. A. and                       B. but                  C. or                     D. so

44. A. passwords       B. keys                     C. answers             D. computers

45. A .even                   B. also                    C. as well              D. too

带煤气作业时，禁止一切火源的范围是（）。

A.50m

B.40m

C.70m

D.60m