完全胃肠外营养是指(    )
    A．通过静脉输入全部营养    B．从胃管内补其不足
   C．少量口服                D．补充要素膳
   E．添加匀浆液

“三北”防护林体系中“三北”是指（）。

A.东北
B.华北
C.西北
D.长城以北

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As we have only moderate means at hand, the tie-up of funds for ______ three to four months indeed presents a problem to us. A．as soon as B．as far as C．as long as D．as well as

A.

B.as
C.as
D.as
E.as

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