某有机物在氧气中充分燃烧,生成等物质的量的水和二氧化碳,则该有机物必须满足的条件

题型:选择题

问题:

某有机物在氧气中充分燃烧,生成等物质的量的水和二氧化碳,则该有机物必须满足的条件是 

A.分子中的C、H、O的个数比为1:2:3        B.分子中C、H个数比为1:2

C.该有机物的相对分子质量为14                 D.该分子中肯定不含氧元素

考点:炔烃的通性烷烃的通性烯烃的通性芳香烃的通式
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tRNA转运氨基酸时与氨基酸相连接的核苷酸是()

A.鸟苷酸

B.尿苷酸

C.腺苷酸

D.胸苷酸

题型:选择题

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

题型:选择题

()是素质教育施教态度的基本方面。

A.忠诚职位,献身教育

B.尊重信任,深爱学生

C.竭力躬行,托以致远

D.严于律己,铸树典范

题型:选择题

煤气中毒较重者,如出现()等症状,应通知煤气防护站和附近卫生所赶到现场急救。

题型:选择题

农业税

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