If the extra Risk is needed, the additional ______ should be borne by the buyer.
A.
payment
B.
coverage
C.
premium
D.
capital
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举一反三
【单选题】语句String str =“123456789”;str = str.substring(1,3);执行后str中的值为______。If String str =“123456789”;str = str.substring(1,3);, then the value in str will be: