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【单选题】
3级高血压是指血压的范围为____ A.收缩压等于160~180mmHg,舒张压大于等于110mmHg B.收缩压等于160~180mmHg,舒张压小于110mmHg C.收缩压等于140~160mmHg,舒张压大于100mmHg D.收缩压等于140~160mmHg,舒张压小于100mmHg E.收缩压大于等于180mmHg,舒张压大于等于110mmHgA.
B.
C.
D.
E.
E
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举一反三
【单选题】Economists typically measure efficiency using
A.
the price paid by buyers.
B.
the quantity supplied by sellers.
C.
total surplus.
D.
profits to firms.
【单选题】Both of the two speakers agree that______
A.
in Britain and America people speak utterly different languages
B.
there are few things identical in British and American English
C.
British and American English are imcomprehensible to each other
D.
British and American English are understandable between the two people
【单选题】We are glad to inform. you that your terms of delivery and payment are quite acceptable __________ us.
A.
at
B.
from
C.
to
D.
into
【单选题】When firms are faced with making strategic choices in order to maximize profit, economists typically use ____ to model their behavior.
A.
monopoly theory
B.
game theory
C.
cartel theory
D.
the theory of perfect competition
【单选题】Since they speak different languages it is really hard for them to ___ with each other.
A.
understand
B.
express
C.
communicate
D.
go
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