问题
单项选择题
正常人体循环阻力的范围是
A．2000～2500dynes·sec/cm5
B．1500～2000dynes·sec/cm5
C．500～1000dynes·sec/cm5
D．2500～3000dynes·sec/cm5
E．1000～1500dynes·sec/cm5
答案
参考答案：B
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正常人体循环阻力的范围是
A．2000～2500dynes·sec/cm5
B．1500～2000dynes·sec/cm5
C．500～1000dynes·sec/cm5
D．2500～3000dynes·sec/cm5
E．1000～1500dynes·sec/cm5
参考答案：B
| 完形填空。 |
| Dick lived a little far from his school, but he liked to 1 to school every day. On his way to his school he always went 2 a playground. When it rained, like many other boys, Dick liked playing in the water. One afternoon when the boy came 3 , he was all wet. His mother became very 4 and said, " Don't play in the water after school." The next day he was very 5 again, and his mother became 6 angrier. "I will tell your father 7 you go to play in the water again," she said. "And then he will punish (惩罚) you." The third day the boy was 8 when he came back from school. "You are a 9 boy today," said his mother. "You didn't play in the water." "No," he answered. "Because there were 10 older boys in the water, I couldn't play in it. |
| ( )1．A.ride ( )2．A.pass ( )3．A.house ( )4．A.angry ( )5．A.dry ( )6．A.very ( )7．A.if ( )8．A.wet ( )9．A.good ( )10．A.many too | B.walk B.from B.family B.hungry B.late B.more B.before B.dry B.well B.so many | C.fly C.cross C.home C.worried C.early C.much C.until C.late C.terrible C.too much | D.come D.through D.school D.happy D.wet D.too D.after D.early D.friendly D.much too |