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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
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2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3题
A．The sacks he carried were too small.
B．The policeman arrived.
C．He had a heart attack at that moment.
D．He was not allowed to carry large boxes or sacks.
第4题
A.the most expensive mechanical heart
B.a mechanical heart used in the 1980s
C.as advanced as Abiocor
D.replacing Abiocor
第5题
By "Dr. Clark lived for 112 days" , the author most probably means that _____________.
A．the replacement of Dr. Clark' s heart was a failure
B．there was still a long way to go in applied bionics
C．applied bionics was promising
D．the first artificial heart was most effective
第6题
A.the study of longstanding mysteries
B.the analysis of cardiac cells
C.the prevention of chronic diseases
D.the treatment of heart disease
第7题
The phrase "this relationship"(in Line 3, Para. 5 )refers to the connection between ______and the incidence of heart disease.
A．the amount of fish eaten
B．regular fish-eating
C．the kind of fish eaten
D．people of different regions
第8题
A．The Library needs more books and paintings.
B．The Library's running costs are going down.
C．It is impossible to grow grass and trees in the heart of New York.
D．There are many precious books of historical value in the Public Library.
第9题
What is the result of the bypass operation？
A．The patient is relieved of pain.
B．The patient's artery condition is improved considerably.
C．The patient has a 50% chance of undergoing another operation within five years.
D．The patient won't suffer from heart disease any more.
第10题
We can know from the passage that______.
A．the reason why aging takes a greater loss on the male heart has been found out
B．scientists are on the way to find out why the male heart loses more of the cells
C．the team has done something to prevent the male from suffering the greater loss
D．women over 70 could lose more heart cells than those at the age of 20
