对于高权威的传达者，发出的信息与个人原有态度差异较大时，引发的态度改变量最大。()

now the problem of air pollution is becoming critical. it__________ an immediate solution.

A. calls off
B. calls for
C. calls up
D. calls on

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you ________ a pass to enter that building.

A. need get
B. need getting
C. need got
D. need to get

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