问题
单项选择题 A1型题
下列关于通气/血流比值的描述哪一项是不正确的（）
A.安静时正常值为0.84
B.通气/血流比值减少，意味着生理无效腔增大
C.肺动脉栓塞时，比值增大
D.肺尖部比值增大，可达3
E.肺下部部分血流得不到充分气体交换，比值减少
答案
参考答案：B
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下列关于通气/血流比值的描述哪一项是不正确的（）
A.安静时正常值为0.84
B.通气/血流比值减少，意味着生理无效腔增大
C.肺动脉栓塞时，比值增大
D.肺尖部比值增大，可达3
E.肺下部部分血流得不到充分气体交换，比值减少
参考答案：B
A gentle wind blew through Jennifer’s hair. The golden red sun was 36 . She was on the beach， looking up at the ball. She was amazed by its 37 ， deep red in the middle， 38 fading into yellow. She could hear nothing but the 39 and the seagulls flying up above in the sky. The atmosphere 40 her. After all she had been through， this is what she 41 . “It’s getting late，”she thought，“I must go home， my parents will be 42 where I am.”She wondered how her parents would react， when she got home after the three days she was 43 . The sun had set by now and it was getting 44 . She tried to imagine having her favorite 45 on until she saw her front door. It seemed different. 46 had taken care of the outside garden for days. She was 47 : her father was usually so strict about keeping everything clean and tidy， and now… It all seemed 48 . She couldn’t understand what was going on.She entered the 49 . First，she went into the kitchen where she saw a（n） 50 written by her father. It said：“Dear Ellen，there is some coffee ready，I went 51 .” Ellen was her mother but-where was she? On the right side of the hallway was her 52 room. She went in. Then she saw her mother，lying on the bed sleeping. Her 53 looked so tired，as if she hadn’t 54 for days. She was really pale. Jenny just fell asleep beside her. When Jennifer woke up she found something 55 . She was in her cozy bed in her nightclothes. It felt so good being back home. Suddenly she heard a voice.“Are you feeling better now， dear? You know you got us very， very scared.”
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