根据下面的英文提示所提供的情景，请你帮助李明出主意，写出你解决问题的想法。词数不少于50。

On the morning of June 7, Li Ming is taking a bus on his way to take the entrance examination. Unfortunately, he is caught in a traffic jam because of an accident. How can he manage to get there in time? Please think out two or three different ways for him.

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汇票是委托付款人在见票时或者在指定日期无条件支付确定的金额给收款人或者持票人的票据，（）。

A.可以由企业签发

B.不能由银行签发

C.可以由银行签发

D.不能由企业签发

E.由出票人签发