C. huge waves
D. damages to cities
Why can't the northern half of the earth escape for long?
A. Because the land is covered with water.
B. Because wars break out among countries.
C. Because people there can not live at the temperature of zero.
D. Because the light and heat from the sun can not reach the earth.
By giving the example of dinosaurs, the author tries to prove ________.
A. animals could not live in the cold climate
B. the Earth could be hit by other objects in space
C. the human beings will die out in 2094
D. what happened 65 million years ago was an invented story
C
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,judgement and coordination(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(浓度) is: ·50 milligrams of alcohol per 100 mL of blood;or ·22 micrograms of alcohol per 100 mL of breath;or ·67 milligrams of alcohol per 100 mL 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.
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