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【单选题】
The common manifestation of most excitable cells responding to stimuli is to produce（ ）
A.
Secretion
B.
Action potential
C.
Nerve impulses
D.
contraction
E.
End plate potential
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参考解析：
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举一反三
【多选题】The factors that inhibit gastric acid secretion are（ ）
A.
Gastric inhibitory peptides
B.
Trypsin
C.
Omeprazole
D.
Somatostatin
E.
Gastrin
【单选题】The most basic way to maintain the body position is（ ）
A.
Muscular tension reflex
B.
Flexor reflex
C.
Righting reflex
D.
Contralateral extensor reflex
E.
Tendon reflex
【单选题】The effect of glucocorticoids on blood cells is（ ）
A.
Erythrocytopenia and thrombocytopenia
B.
Erythrocyte, neutropenia and lymphocyte are all decreased
C.
The number of red blood cells and platelets is increased, lymphocyte decreased
D.
RBC and lymphocyte increased, neutropenia decreased,
E.
Erythrocyte and neutropenia decreased, lymphocyte increased
【单选题】At the end of normal expiratory, the amount of air kept in the lungs is equivalent to（ ）
A.
Expiratory volume
B.
Functional residual capacity
C.
Inspiratory reserve volume
D.
residual volume
E.
Lung capacity
【多选题】Blood transfusion may be considered under the following statements（ ）
A.
The donor's blood type is AB and the recipient's is O
B.
The donor's blood type is AB and the recipient's is B
C.
The donor's red blood cells are not agglutinated by the recipient's serum
D.
The donor's blood type is A and the recipient's blood type is AB
E.
The donor's blood type is O and the recipient's blood type is B
【单选题】The common component composed of DNA and RNA is _____（ ）
A.
D-2-deoxyribose
B.
Thymine
C.
D-ribose
D.
Guanine
【单选题】In general, the diastolic pressure can reflect（ ）
A.
Elasticity of the aorta
B.
Stroke volume
C.
Peripheral resistance
D.
How much blood is returned
E.
Heart rate
【单选题】Intravenous injection of 20% glucose solution in rabbits resulted in increased urine output due to（ ）
A.
Increased glomerular filtration rate
B.
Increased solute concentration of tubule fluid
C.
Increased aldosterone secretion
D.
ADH secretion is decreased
E.
Increased glomerular effective filtration pressure
【多选题】Digestive juices that can digest protein are（ ）
A.
Pancreatic juice
B.
Small intestinal juice
C.
Gastric juice
D.
Bile
E.
Saliva
【单选题】Sequences that are removed from the primary RNA transcript in eukaryotes are called________.（ ）
A.
operons
B.
mRNA
C.
introns
D.
exons