单项选择题

A．Many species have moved further north.
B．Many species have come into existence.
C．Many species have developed a habit of migration.
D．Many species have become less sensitive to climate.
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单项选择题
Korea attributes its improved economy to the use of knowledge and more investment and workers.
A．Y
B．N
C．NG
单项选择题
A．Bring a great deal of useful experience to the university.B．Improve human relationships in the university.C．Bring a fear of aging among young students on the campus.D．Improve the reputation of the university.
A．Bring a great deal of useful experience to the university.
B．Improve human relationships in the university.
C．Bring a fear of aging among young students on the campus.
D．Improve the reputation of the university.
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