已知函数y=tanωx(ω>0)与直线y=a相交于A、B两点,且|AB|最小值为

题型:填空题

问题:

已知函数y=tanωx(ω>0)与直线y=a相交于A、B两点,且|AB|最小值为π,则函数f(x)=
3
sinωx-cosωx的单调增区间是______.
考点:正弦、余弦函数的图象与性质(定义域、值域、单调性、奇偶性等)
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以上哪项为雌激素的作用

A.使 * * 上皮细胞脱落加快
B.增加子宫血液循环和收缩力
C.能直接调控卵巢的周期性变化
D.促进女性阴毛与腋毛的生长
E.通过中枢神经系统有升温作用

题型:填空题

如图所示,正在匀速转动的水平转盘上固定有三个可视为质点的小物块A、B、C,它们的质量关系为mA=2mB=2mC,到轴O的距离rC=2rA=2rB,下列说法正确的是(  )

A.B的角速度比C小

B.A的线速度比C小

C.B的向心力比C小

D.A的向心加速度比B大

题型:填空题

在依法冻结单位存款时,如遇被冻结单位银行账户的存款不足冻结金额时,应当在六个月的冻结期内,冻结该单位可以冻结的存款,直至达到需要的冻结金额。

题型:填空题

第二节完型填空(共20小题,每小题1.5分,满分30分)

阅读下面短文,掌握大意,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。

Millions of youngsters across Europe could suffer permanent(永久性) hearing loss after five years if they listen to MP3 players at too high a volume for more than five hours a week, EU scientists warned. This seemed to be 36  for many youngsters.

The scientists’ study, requested by the European Commission,  37  the concept of “leisure noise”, which was thought to be fashionable for the youth.  38  it said children and teenagers should be  39  from increasingly high sound levels—with loud mobile phones also coming in for  40  .

“There has been increasing  41  about exposure from the new generation of personal music players which can reproduce sounds at very  42  volumes without loss of quality,” the Commission, the EU’s executive branch,  43  in the report.

“Risk for hearing damage depends on sound level and  44  time,” it said. “More and more young people were  45  with the significant threat that leisure noise brought to  46  .”

The scientists  47  the number of people in that risk category at between five and ten cent of listeners,  48  up to 10 million people in the European Union.

49  of personal music players have sharply increased in EU countries’ market in recent years,  50  of MP3 players.

Mobile phones which are used  51  too high a volume also came under  52  from Meglena Kuneva, the EU’s consumer affairs commissioner.

“I’m concerned that so many young people…who are  53 users of personal music players and mobile phones at high volume levels, may be  54  damaging their hearing,” she said in the statement.

So, the youth, you should think twice about your preference. You should remember your  55  is more important than fashion and cool.

36. A. wonderful           B. thoughtful            C. believable             D. unbelievable

37. A. attracted             B. attained                    C. attacked                   D. contrasted

38. A. But                    B. And                         C. However                  D. So

39. A. stopped           B. prevented                 C. protected                  D. kept

40. A. criticism             B. protection                C. envy                        D. encouragement

41. A. concern                 B. appreciation              C. distraction            D. curiosity

42. A. low                    B. little                        C. hard                         D. high

43. A. protested             B. stated                       C. warned                     D. worried

44. A. leisure            B. pressure                   C. exposure                  D. expression

45. A. faced                  B. satisfied                   C. born                        D. armed

46. A. body                  B. hearing                    C. face                         D. life

47. A. sorted out           B. made out                  C. marked out           D. worked out

48. A. meaning             B. reading                    C. saying                  D. being

49. A. Prices                 B. Praises                     C. Limits                  D. Sales

50. A. specially             B. similarly                  C. particularly           D. partly

51. A. at                       B. to                               C. for                           D. by

52. A. threat                 B. fire                          C. discussion             D. repair

53. A. essential              B. exhausted                 C. frequent                   D. free

54. A. consciously     B. sensibly                    C. unwillingly           D. unknowingly

55. A. future                 B. health                  C. hope                        D. goal

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