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【单选题】
维持人体直立的主要肌肉是A.
小腿三头肌、胫骨前肌、胫骨后肌
B.
股四头肌、股二头肌、半腱肌
C.
臀大肌、髂腰肌、大收肌、竖脊肌
D.
竖脊肌、臀大肌、股四头肌、小腿三头肌
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皮皮学刷刷变学霸
举一反三
【单选题】The common opening of the alveoli is( )
A.
alveolar sac
B.
respiratory bronchiole
C.
pulmonary mesenchyme
D.
alveolar septa
E.
alveolar pore
【多选题】The following statements about Americans are :
A.
Most Americans put great faith in the future.
B.
Most Americans are constantly planning for the future.
C.
Many of them can hardly wait to finish what they are doing so that they can move on to something else.
D.
What they want, they want now, so they can dispose of this moment and move on to the next.
【单选题】Today there are about seven ______ Americans in colleges and universities
A.
millions
B.
million
C.
millions of
D.
million of
【简答题】Americans never tell others about their weight.
【单选题】The factor associated with anemia is( )
A.
lack of intrinsic factor and vitamin B-12 malabsorption
B.
pepsin can’t hydrolyze proteins
C.
gastric acid deficiency
D.
lack of intrinsic factor and vitamin C malabsorption
E.
hypofunction of chief cell
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