问题
单项选择题
When travelling, you are advised to take travellers' checks, which provide a secure ______ to carrying your money in cash.
A．substitute
B．selection
C．preference
D．alternative
答案
参考答案：D
解析： alternative选择，替换物。A．substitute代用品；B．selection选择，挑选；C．preference偏爱，优先选择。