問題詳情
D. Recently, humans have become more aware of our technological limitations. Instead oftrying to invent new solutions to our problems, we are __29__ the natural world for guidance.One pressing problems is our need for clean water. The __30__ to protecting our waterresources may be the soggy areas of ground we often take for granted: wetlands. Wetlands maynot look spectacular, but they perform amazing feats. One of them is filtering and cleaningwater. Dirty water enters a wetland, passes through its parts, and __31__ cleaner on the otherside! They are just like __32__ water filtration machines. Around the globe, people areconstructing wetlands instead of building huge, smelly tanks to purify their waste water. Awetland can clean waste water enough to allow it to safely reenter a clean water source.
29. ( )
(A) pointing to
(B) looking to
(C) embarking on
(D) guarding against
29. ( )
(A) pointing to
(B) looking to
(C) embarking on
(D) guarding against
參考答案
答案：B
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
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