问题
单项选择题
In general，the extent of the carrier’s immunity，as laid down by the Act，cannot be increased（）contract.
A.in
B.with
C.by
D.on
答案
参考答案：C
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In general，the extent of the carrier’s immunity，as laid down by the Act，cannot be increased（）contract.
A.in
B.with
C.by
D.on
参考答案：C