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【单选题】Part ADirections: Read the following four texts．Answer the questions below each text by choosing A, B, C or D．(40 points)The long year of food shortage in this country have suddenly given way to appar...
A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food
【单选题】利他行为是指（）.
A.
一种对别人有好处的行为
B.
一种自觉自愿的、对别人有好处的行为
C.
一种对别人有好处，没有明显自私动机的行为
D.
一种对别人有好处，没有明显自私动机的、自觉自愿的行为