Dry farming is a type of agriculture used in areas______less than 20 inches of rainfall.
A.there are
B.where there is
C.in which is
D.which has
第1题
A.when John Bumstead and Orvan Hess saved
B.saved John Bumstead and Orvan Hess
C.did John Bumstead and Orvan Hess save
D.that John Bumstead and Orvan Hess
第2题
A.somewhere
B.sometimes
C.something
D.somewhat
第3题
A.As isolated as its few remaining habitats may be
B.As its few remaining isolated habitats may be
C.May its few remaining habitats be as isolated
D.Its few remaining habitats may be as isolatcd
第4题
A.a graver threat that is long-term.
B.long-term the gravest threat.
C.the gravest long-term threat.
D.a long-term threat graver.
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