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[单选题]
副交感神经对体循环的主要作用是影响( )
A
心肌收缩力
B
外周血管阻力
C
血管顺应性
D
心率
E
心房容积
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试题答案:
D
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It was the late spring of 1979,a hot Saturday afternoon. Hundreds of us sat 21,side by,side,in rows of wooden chairs on the maincampus lawn (校园草坪)。We 22‘ blue robes (毕业生长袍)。We listened carefully to long 23.When the ceremony (典礼)was 24_,we threw!our caps in the air,and we were officially graduated from college.After that,I found Morrie Schwartz,my 25 professor,and introduced him tomy 26 …… He was a small man who took small steps, as ifa 27 wind could; at any time, 28 him up:into the cloudS! His teeth were in good shape: When he smiled it was as if you had just 29 him the funniest joke on earth.He told my parents how I 30 every class he taught. He told them,“You havea 31 boy here. He helped me a 10t.” Shy but 32,I looked at my feet.Before we left,I 33 Mr. Schwartz a ‘present,a briefcase with his name on the front. I didn’t want to forget him. 34 I didn‘t want him to forget me.He asked if I would keep in 35,and without hesitation (犹豫)I said,“Of course.”When he turned around,I saw tears in his eyes.
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