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【单选题】
A nurse should also follow these instructions which help to prevent many of the problems that have killed surgical patients in the past.A.
护士还必须执行下列指示，这些指示有助于防止出现以往那种术后患者常常死亡的状况。
B.
下列指示必须执行，因为这些指示有助于防止出现以往那种术后患者常常死亡的状况。
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【单选题】At weekends we help mother with housework in the kitchen _____ she can enjoy herself by searching the Internet. [ ]
A.
after
B.
until
C.
that
D.
so that
【简答题】On weekends we are usually allowed to go to bed later than usual to watch TV.
【单选题】On weekends we like to hang out with _________ friends. [ ]
A.
we
B.
us
C.
ours
D.
our
【简答题】( )是指国家利益不受威胁、侵害和破坏的客观状态。
【单选题】We are unable to provide housekeeping services ( ) weekends.
A.
In
B.
At
C.
On
D.
during
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