问题 单项选择题

不能清洁牙齿邻面菌斑的口腔保健用具是()

A.牙间隙刷

B.牙签

C.牙间冲洗器

D.牙线

E.橡胶按摩器

答案

参考答案:E

解析:橡胶按摩器主要作用可以使上皮增厚,角化增强,并有利于上皮结缔组织的营养代谢活动,还能增加牙龈组织血液循环,改善营养及氧的供应,有助于组织代谢,提高牙周组织对外界损伤的抵抗力,减少牙周疾病发生。其他选项均能清洁牙齿邻面菌斑。

完形填空

When Alice started to cycle home from Jenny’s house, she wasn’t nervous. She was certainly not afraid of the dark. __21___, it was only a 15-minute ride home. But halfway there, she began to wish that she hadn’t been so ___22___.

As she rounded a sharp bend, it suddenly___23__ cold — very cold. Alice’s breath became puffs of white cloud and her legs were so cold that it became hard to ride.

With her heart beating fast, she struggled so hard to move __24__ that she didn’t hear the car which suddenly appeared beside her. She stopped by the road. The big black car also ___25___. Slowly, the passenger-window began to slide down. Alice held her breath. In the soft light inside the car, something _26__. Then, the light brightened and Alice was staring at a sweet, grey-haired old lady. “Hello, dear,” said the old lady. “I need ___27___. I’m afraid I’m lost. I need to find the nearest airport. I must be there in the next five minutes. ”

“Airport? You ___28___ are lost,” Alice said. “You need to go back five kilometers ___29___ you reach the T-junction. Turn left and ___20___ for about another 10 kilometers to the main highway. From there, just follow the ___31___ to the airport. But I’m afraid there’s no ___32__ you’ll get there in five minutes!”

“Thank you very much, dear,” replied the old lady. “Don’t worry — I’ll _33__ in time.”

The ___34___ moved up and the car started off. A little way ahead, it ___35___ and with headlights flashing, it drove past Alice. But then, something ___36___ happened. The car began changing. First, its color __37___from black to silvery-grey. Then, the wheels began disappearing, but the car continued to move forward, __38___ just above the ground. As the car ___39___ into the dark sky, the big red tail-lights grew larger and larger and glowed more and more brightly. With a faint whistling ___40___, the car was gone in seconds, leaving Alice shaking her head in disbelief…

小题1:

A.However

B.Besides

C.Therefore

D.Otherwise小题2:

.

A.brave

B.excited

C.curious

D.stubborn小题3:

A.fell

B.seemed

C.proved

D.grew小题4:

A.aside

B.around

C.forward

D.backward小题5:

A.arrived

B.stopped

C.stayed

D.started小题6:

A.gathered

B.existed

C.dropped

D.moved小题7:

A.help

B.gas

C.rest

D.water小题8:

A.necessarily

B.normally

C.basically

D.certainly小题9:

A.if

B.until

C.unless

D.as小题10:

A.drive

B.walk

C.follow

D.march小题11:

.

A.address

B.signs

C.notices

D.guidance小题12:

A.doubt

B.room

C.time

D.way小题13:

A.have it

B.get it

C.make it

D.finish it小题14:

A.door

B.window

C.headlight

D.wheel小题15:

.

A.passed

B.rushed

C.turned

D.continued小题16:

A.strange

B.sensitive

C.imaginable

D.horrible小题17:

A.developed

B.appeared

C.spread

D.changed小题18:

A.rolling

B.floating

C.drawing

D.flashing小题19:

A.pointed

B.returned

C.broke

D.rose小题20:

A.tune

B.voice

C.sound

D.tone

实验题