50. When traveling, you are always advised to take travelers\' checks, which provide a safe ____ to carrying your money in cash. A. substitute B. selection C. prevention D. alternative詳細解釋下？

熱心網友

應該是B.最大的混淆項是D.alternative.但它的含義是兩者選其一.所以被排除.A. substitute 的含義是替代者.C. prevention 的含義是預防.不合題意. 翻譯過來應該是:旅行的時候,你應該攜帶旅游支票.這與攜帶現金比起來是一種安全的選擇.

熱心網友

D.