单项选择题

Which is NOT mentioned about the factors which can influence the life span of freezers

A．Humidity.
B．Proper care.
C．The amount of storage.
D．Surrounding temperatur
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单项选择题
Your proposal deserves ______ and is worth
A．to be discussed, to be tried
B．discussing, trying
C．to be discussed, trying
D．discussing, to be trying
单项选择题
Far away on each hand ______ the rich pastures, and the patches of dark earth made ready for the seed of broad leaved green crops.
A．prolong
B．stretch
C．extend
D．expand
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