英国物理学家_____________通过一系列实验发现,电流发热具有以下规律:

题型:填空题

问题:

英国物理学家_____________通过一系列实验发现,电流发热具有以下规律:电流通过导体产生的热量,跟电流的_____________,导体的_____________,通电_____________成正比。这个规律叫做_____________。

考点:焦耳定律,电热
题型:填空题

如图所示,甲、乙、丙、丁是四幅实验装置图.

A.甲实验说明闭合电路的一部分导体在磁场中做切割磁感线运动时,导体中就产生电流

B.乙实验说明磁场能产生电流

C.丙实验说明同名磁极相吸,异名磁极相斥

D.丁实验说明通电直导线在磁场中受到力

以上说法正确的是_________和____________。

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,并在答题卡上将该项涂黑。

When Alice started to cycle home from Jenny’s house, she wasn’t nervous. She was certainly not afraid of the dark.  36  , it was only a 15,ncnule ride home. But halfway there, she began to wish that he hadn’t been so   37  .

As she rounded a sarp benu, it suddenly   38   cold-very cold. Alice’s breath became puffs of white cloud and her legs aso cale that it became hard to ride.

With her liart beating fast, she struggled so hard to move   39   that the didn’t hear the car which suddenly appeared beside her. She stopped by the road. The big black car also   40  ,Slowly, the passenger-window began to slide down. Alice held her breath. In the soft light inside the car, something   41  . Then, the light brightened and Alice was staring at a sweet, grey-haired old lady. “Hello, dear,”said the old lady. “I need   42  . I’m afraid I’m lost. I need to find the nearest airport. I must be there in the next five minutes.”

“Airport? You   43   are lost,”Alice said. “You need to go back five kilometers   44   you reach the”

T-junction.Turn left and  45  for about another 10 kilometers to the main highway.From there,just follow the  46  to the airport.But I’m afraid there’s no  47  you’ll get there in five minutes!”

“Thank you very much,dearn eplied the old lady.“Don’t worry-I’ll  48  it time.”

The  49  up and the started off.A little way ahead,it  50  and with hedlights filashing, it drove past Alice. But then, mething  51  happened.The car hegary changing flrst, its color  52  from black to silvey grew when, the wheels began disappearing, but the car    to move forward,  53  just above the grolld. As the car  54  into the dark sky, the big red tail-lights grew larger and larger and glowed more and more brightly.With a faint whistling  55  ,the car was gone in seconds,leaving Alice shaking her head in disbelief…

36.A.However                     B.Besides              C.Therefore           D.Othrwise

37.A.brave                   B.excited               C.eurious               D.grew

38.A.fell                      B.around               C.forward              D.backward

40.A.arrived                 B.aopped               C.stayed                D.started

41.A.gathered               B.opped                C.stayed                D.started

42.A.help                            B.exicult               C.rest                    D.water

43.A.necess                  B.gas                    C.rest                    D.water

44.A.if                         B.until                  C.unless                D.as

45.A.drive                    B.walk                  C.follow                D.march

46.A.address                 B.sigms                 C.notiees               D.guidance

47.A.doubt                   B.room                 C.time                   D.way

48.A.have it                  B.get it                  C.make it                     D.finishit

49.A.door                     B.window              C.headlight            D.wheel

50.A.passed                  B.rashed                C.turned                D.continued

51.A.strange                 B.entive               C.imaginable         D.horrible

52.A.developen             B.apend                 C.spread                D.ladea

53.A.rollin                   B.floating              C.drawing             D.flashing

54.A.pointed                 B.returned             C.broke                 D.rose

55.A.tune                            B.voice                 C.sound                 D.tone

题型:填空题

The tendency today is for teachers and parents to emphasize individual responsibility and to stress that educational goals for students should be () to their chosen vocations rather than provide a generalized higher education.

A. subjected

B. stimulated

C. developed

D. geared

题型:填空题

支付令是一种()程序。

A.督促

B.审判

C.诉讼

D.简易

题型:填空题

人民警察离休、退休的,其警衔予以取消。( )

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