单项选择题

When traveling, it is possible that you may be advised to take the travelers’ checks, which provide a secure ______ to carrying your money in cash.

A. selection
B. preference
C. alternative
D. substitute
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单项选择题
Officials believe that ______ are responsible for the destruction of nearly 20,000 square kilometers of jungle.
A．fire disaster
B．environmental change
C．logging and clearing land for farming
D．air warming
单项选择题
Eric nearly always wins the science award. That’s because his project are ______.
A. extremely presented well
B. well presented extremely
C. presented well extremely
D. extremely well presented
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