C.The seriousness of ewaste.
D.The management of ewaste.
答案:D 主旨大意题。本文从电子垃圾与日俱增这一现象出发,分析了电子垃圾治理的必要性,并对一些国家政府将电子垃圾治理的责任延伸到生产者这一考虑进行评述。由此可知,本文通篇是围绕着电子垃圾治理这一话题展开的。故正确答案为D。
阅读理解阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。Smoking is the worst thing you can do for your health. Fortunately, it’s never too late to get the benefits of quitting. If you’ve tried to quit before and failed, it’s time to make up your mind and try again.
Smoking is responsible for one of every five deaths. That includes 29% of all cancer deaths, 87% of all lung cancer deaths, and nearly 20% of all deaths are from cardiovascular disease. But long before smoking kills you, it ages you. You can see that smoking accelerates the drying and wrinkling of the skin. But there are fewer obvious effects as well. Indeed, smoking takes years away from your life. Nearly half of all chronic smokers die an average of 20 to 25 years before their time.
Besides an early death from cancer or heart disease, smoking can cause lung disorders. People who smoke over a pack a day have almost three times the risk of contracting pneumonia (肺炎) than that of nonsmokers. By lowering levels of estrogen (雌性激素) in men and women, smoking speeds bone less. If a woman smokes a pack of cigarettes every day, she will enter menopause (更年期) with 5% to 10% less bone mass than a nonsmoker.
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