1.What is the area of the places in which the air is polluted by the rubbish from the shipping lanes?
A.20km2. B.40km2.
C.5km2. D.8km2.
答案B
解析细节理解题。根据第二段第二句中的“An obvious sharp rise in ozone(臭氧) was found...—an area of over 40 square km.”可知:B项“40 km2”正确。