单项选择题

Nearly half of Americans aged 26 and old take part in some form of continuing education.　　A B C D
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单项选择题
A．difficultB．Simplest C．simple D． most difficult
A．difficult
B．Simplest
C．simple
D． most difficult
单项选择题
How and why this language has survived for more than a thousand years，while spoke by very few，is hard to explain. A B C D
How and why this language has survived for more than a thousand years，while spoke by very few，is hard to explain.　　A B C D
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