練習:

　　1. Why does the risk of developing skin cancers in children become greater and greater?

　　A Because they pay little attention to their skin health.

　　B Because they are short of physical training.

　　C Because the earth’s protective ozone layer declines year after year.

　　D Because the earth is getting warmer and warmer.

　　2. How many people die from skin cancers including melanoma all over the world every year?

　　A An average of 66，000.

　　B Approximately 130，000.

　　C About 196，000.

　　D Between 2，000，000 to 3，000，000.

　　3. What people are more likely to develop eye cataracts?

　　A Fairer-skinned people.

　　B Darker-skinned people.

　　C People living near the equator.

　　D People living near the poles.

　　4. All of the following articles may use some chemicals unfavorable for the preservation of the ozone layer EXCEPT______.

　　A aerosols

　　B refrigerators

　　C pesticides

　　D medicines

　　5. The phrase “for good” in the last paragraph can be best replaced by______.

　　A permanently

　　B correctly

　　C largely

　　D well

　　答案與題解：

　　1.C 文章第一句就說到，由于地球起保護作用的臭氧層一直縮小，因此兒童發生皮膚癌的危險性增大，故C項應是最佳答案。

　　2.A 第三段第一句說，WHO在2002年的世界健康狀況報告中提到，全世界每年平均有S6， 000人死于黑素瘤及其他類型的皮膚癌，故A項是正確答案。

　　3.C 第四段最后一句說到，住在赤道附近的人更容易患白內障，并沒有提到南極、北極。至于膚色，該句說到，白人、黑人患白內障的可能性是相等的。

　　4.D 第五段最后一句舉例說明某些殺蟲劑、電冰箱及煙霧劑可能使用一些對臭氧層有害的化學物質，并沒有提到供內服的藥品，而且根據推理，也應將其排除在外。

　　5.A 短語for good或for good and all的意思是“永久地”、“決定性地”；英英詞典的釋義為“permanently”、“finally”、“forever”，故其他選項均不確切。