单项选择题

A．Replacing the native corn with the hybrid corn.
B．Replacing the hybrid corn with the native corn.
C．Replacing the new type of corn with the traditional corn.
D．Replacing the traditional corn with the native corn.
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单项选择题
The chief concern of British universities is________.
A．how to tackle their present financial difficulty
B．how to expand the enrollment to meet the needs of enterprises
C．how to improve their educational technology
D．how to put an end to the current tendency of quality deterioration
单项选择题
A．He will not be in this office at all this week.B．He will be here on Tuesday only.C．He’’ll be here on Monday, Wednesday and Friday.D．He’’ll be at this office on Tuesday and Thursday.
A．He will not be in this office at all this week.
B．He will be here on Tuesday only.
C．He’’ll be here on Monday, Wednesday and Friday.
D．He’’ll be at this office on Tuesday and Thursday.
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