29. The species composition of a forest is often unique to that forest, _____ some forests consisting of many
hundreds of species of trees while others consist of just a handful of species.
(A) in
(B) for
(C) with
(D) when
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統計: A(63), B(43), C(105), D(30), E(0) #3426238
統計: A(63), B(43), C(105), D(30), E(0) #3426238