9. Blood pressure, sometimes ______ to as arterial blood pressure, is the pressure exerted by circulating blood on the walls of blood vessels.
(A) refers
(B) is referring
(C) referred
(D) is referred

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統計: A(8), B(7), C(11), D(7), E(0) #1938812

詳解 (共 1 筆)

#5104613
(C)慣用片語 be referred ...
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