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 driving­offence 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.

　　31．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

　　32．The underlined word “it” in the second paragraph refers to “________”．

　　A. alcohol

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