题目内容：
Itisnotnecessarytocarrycashinsteadofdollartravelers'chequesbecausethelattercanbe__________. A．usedforphones,busfaresandhotelreservations
B．usdtopayinrestaurantsandbigstores
C．Usedlikecreditcards,eveninremoteareas
D．exchangedeasily,evenatcarrentalcompanies
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答案解析：