1 . The US Fish and Wildlife Service carefully____________（monitor）and manages the wolf packs in Yellowstone. (所给词的适当形式填空)

2 . However, they have real impacts, as they result____________ misguided use of scarce resources. (用适当的词填空)

4 . There has been a dramatic rise in the number of extreme weather events over the past 20 years, caused largely by rising____________(globe) temperatures, according to a new report from the United Nations. (所给词的适当形式填空)

5 . He got on board the ________ (electricity) vehicle and went downtown to buy some high-end products. (所给词的适当形式填空)

6 . Experts are arguing with the media ________ how to recycle waste materials. (用适当的词填空)

7 . ________we know, the lack of oxygen to one’s brain may result in mental damage. (用适当的词填空)

9 . In closing, space________(explore) should not be regarded as a shallow argument. (所给词的适当形式填空)

10 . As a result, the company manages to make better heart monitors and other machines________ doctors regularly use. (用适当的词填空)