问题 选择题

新装修的房子里常有一股异味,这是建材释放出的甲醛的气味.甲醛有毒.所以装修好的房子得空置一段时间,待闻不到异味时放可入住.人们能闻到各种不同的气味,是因为(  )

A.分子在不断运动

B.分子的质量很小

C.分子间有间隙

D.分子的体积很小

答案

因为一切物质的分子都在永不停息的做无规则运动,故进入刚装修的房间,就会闻到甲醒的气味,所以要选用环保材料装饰房间.所以人们能闻到各种不同的气味,是因为分子在不断运动的结果.

故选:A.

单项选择题
完形填空

Driving a car is not just handling controls and judging speed and distance. It requires you to predict what other road users will do and get ready to react to something unexpected. When alcohol is consumed, it enters your bloodstream and acts as a depressant (抑制药), damaging eyesight, judgment and co-ordination(协调),slowing down reaction time and greatly increasing the risk of accidents. Even below the drink driving limit, driving will be affected.

Alcohol may take a few minutes to be absorbed into the bloodstream and start action on the brain. Absorption rate is increased when drinking on an empty stomach or when consuming drinks mixed with fruit juice. To get rid of alcohol from the body is a very slow process and it is not possible to speed   it  up with any measures like taking a shower or having a cup of tea or coffee.

The present Road Traffic Ordinance states clearly that the limit of alcohol concentration is:

50 milligrams of alcohol per 100ml of blood; or

22 micrograms of alcohol per 100ml of breath; or

67 milligrams of alcohol per 100ml of urine(尿液).

Drivers who cause traffic accidents, or who commit a moving traffic offence or are being suspected of drink driving will be tested.

Any driver found drinking beyond the limit will be charged. The driver declared guilty may be fined a maximum of HK $25,000 and be sentenced to up to 3 years in prison and punished for 10 driving-offence points; or temporarily banned from driving.

The same punishment applies to failing to provide specimens(样本)for breath, blood or urine tests without good excuse.

Drink driving is a criminal offence. Be a responsible driver, think before you drink. For the safety of yourself and other road users, never drive after consuming alcohol.

小题1:The first paragraph is mainly about______.

A.the introduction of driving skills

B.the damage of drinking to your body

C.the effect of drinking on driving

D.the process of alcohol being absorbed小题2:The underlined Word“ it” in the second paragraph refers to “______ ”.

A.alcohol

B.absorption

C.blood

D.process小题3:Which of the following is TRUE according to the passage?

A.Drinking below the drink driving limit has no effect on driving.

B.Alcohol is taken in more quickly when drunk with fruit juice.

C.Having a cup of tea helps to get rid of alcohol from the body.

D.50 milligrams of alcohol per 100ml of breath is below the drink driving limit.小题4:A driver suspected of drink driving ________.

A.should provide specimens for testing

B.will be forbidden to drive for 3 years

C.will be punished for 10 driving-offence points

D.should pay a maximum fine of HK $ 25,000