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A．The heart pumps blood in two directions.
B．The blood is circulated round the body in one direction only by the pumping action of the heart.
C．The blood moved with a backward and forward motion.
D．The heart pumps blood in all directions.
答案
更多“A．The heart pumps blood in two directions.B．The blood is circulated round the body in”相关的问题
第1题
What is the main idea of the news item？
A．The mechanical breakdowns of artificial heart.
B．The first artificial heart implanted in a human chest.
C．Various types of artificial pumps have come into play.
D．Doctors achieve milestone using artificial heart with no beat.
第2题
In what way can aspirin help heart surgery patients according to the doctors？
A．It keeps blood vessels from being blocked.
B．It speeds up their recovery after surgery.
C．It increases the blood flow to the heart.
D．It adjusts their blood pressure.
第3题
Which one of the four novels was written by Norman Mailer？
A．The heart of the matter.
B．Cry, the Beloved Country.
C．The Harp in the South.
D．The Naked and the Dead.
第4题
A．The longer people live, the fewer heart attacks people will meet.
B．The number of heart attacks is decreasing.
C．There is no evidence that heart attacks are decreasing.
D．We can fight against different types of heart disease.
第5题
Which of the following is NOT a phenomenon mentioned in the passage？
A．The heart may keep beating after the brain has died.
B．The body may still be alive after the heart and the brain have stopped working.
C．The brain may still be active after the heart has stopped beating.
D．The lung may keep breathing after the brain has died.
第6题
Chronic heart failure is attributed to
A．the dying heart cells.
B．the effect of pharmaceuticals.
C．the weight of the patient.
D．the life span of a person.
第7题
A.the most expensive mechanical heart
B.a mechanical heart used in the 1980s
C.as advanced as Abiocor
D.replacing Abiocor
第8题
Which of the following is NOT a phenomenon mentioned in the passage？
A.The heart may keep beating after the brain has died.
B.The body may still be alive after the heart and the brain have stopped working.
C.The brain may still be active after the heart has stopped beating.
D.The lung may keep breathing after the brain has died.
第9题
A.the death of heart cells
B.the life span of a person
C.the effects of pharmaceuticals
D.the weight of the patient
第10题
Which of the following is NOT a phenomenon mentioned in the passage？
A．The body may still be alive after the heart and the brain have stopped working．
B．The heart may keep beating after the brain has died．
C．The brain may still be active after the heart has stopped beatin9．
D．The lung may keep breathing after the brain has died．
