[填空题]
About Wetlands in the U.S.A.
People enjoy a famous soup (SHE-CRAB SOUP) in North Carolina because the days of the regional soup may be getting fewer and fewer: "no wetlands, no seafood".
Ⅰ. The current situation of wetlands: 1) California has lost
(1) of wetlands--91 percent, (1) ______
and the rate of loss of wetlands is an acre per minute.
2) 21 other states have losted at least half of their
(2) . (2) ______
Ⅱ. The key value of wetlands: 1) Each acre of wetland is worth
(3) more money than (3) ______
an acre of ocean in the benefits;
2) Wetlands act like sponges and
(4) like our kidney: (4) ______
A. filtering out hazardous materials like dirt, chemicals,
pesticides and fertilizers;
B. serving as large
(5)
