So far as humans are concerned, there will be a few positive impacts of the likely climate
1 , in parts of Siberia or northern Canada, increased temperature will tend to lengthen
the growing season with the possibility of growing a greater variety of crops in these regions. In
some places, increased carbon dioxide will 2 the growth of some types of plants, leading to
increased crop yields.
However, because, over centuries, human communities have adapted 3 lives and
activities to the present climate, most changes in climate will tend to produce an 4 impact. If
the changes occur rapidly, quick and possibly costly adaptation to a(n) 5 climate will be
required by the affected community. An alternative might be for the affected community to 6
to a region where less adaptation would be needed—a solution which has become increasingly 7 or, in some cases, impossible in the modern crowded world. 【題組】7. (A) simple (B) neutral (C) precise (D) difficult