单项选择题

Questions 23 and 24 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
What is the final result of the new research

A．Happy people are fearful and like risks.
B．Depressed people live longer than their happy peers.
C．Reserved people try too hard to be happy.
D．Reserved people make people feel cheate
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单项选择题
International edition of textbook ______.
A．is not sold in US
B．has all the contents similar to that of an US edition
C．is from overseas
D．all of the above
单项选择题
Four bags of toxic waste which were found ______ on the Oxford ring road have been handed back to the company that lost them.
A. abandoned
B. abandoning
C. being abandoned
D. to be abandoned
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