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【华慧考博】考博英语每日一练（4.13）考博加油！
1. Japan’s productivity has overtaken America’s in some manufacturing industries, but elsewhere the United States has ______ its lead.
A. taken up
B. brought up
C. rested on
D. clung to
2. If you throw a stone into the still water, you can see ______ spread in rings.
A. ripples
B. rituals
C. revenues
D. expeditions
【考博英语英译汉】
Environmental experts point out that increasing pollution not only causes serious problems such as global warming but also could threaten to end human life on our planet.
