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问题 选择题

下列有关实验操作的叙述中，正确的是[ ]

A．通常以标志重捕法调查土壤中小动物类群的丰富度

B．在叶绿体色素提取和分离实验中，可用培养皿盖住小烧杯以避免层析液挥发

C．探究生长素类似物促进插条生根的最适浓度实验中，插条不能带有芽与叶

D．以葡萄汁为原料制作葡萄醋时，需要严格控制溶氧量，不能向发酵装置通入(无菌)空气

答案

答案：B

完形填空
完形填空。

     The passengers on the bus watched with sympathy as Susan made her way carefully up the
steps. She paid the driver and then, using her hands to__1__the seats, settled in one of them.
     It had been a year since Susan became blind. As the result of an accident she was suddenly
thrown into a world of __2__. Susan's husband Mark watched her__3__into hopelessness
and he was _4__ to use every possible means to help his wife.
     Finally, Susan felt ready to__5__to her job, but how would she get there? She used to
take the bus, but she was now too __6__to get around the city by herself. Mark__7__to ride
the bus with Susan each morning and evening__8__she could manage it by herself.
     For two weeks, Mark __9__Susan to and from work each day. He taught her how to
rely on her other __10, specifically her hearing, to determine where she was and how to adapt
to her new __11__.
At last, Susan decided that she was ready to try the trip__12. Monday morning arrived.
Before she left, she hugged her husband__13__ , her eyes filled with tears of gratitude(感激).
She said good-bye and, for the first time, they went their __14__ways. Each day went perfectly,
and a wild excitement __15__Susan. She was doing it!
     On Friday morning, Susan took the bus to work__16__. As she was getting off the bus,
the driver said, "Miss, I sure __17__you." Curious, Susan asked the driver __18__.
     "You know, every morning for the __19__ week, a fine-looking gentleman in a military
uniform has been standing across the corner watching you until you enter your office building
safely," the bus driver said.
     Tears of happiness poured down Susan's cheeks. She was so lucky for he had given her
a gift more powerful than __20__ . That is the gift of love that can bring light where there is
darkness.

( )1. A. touch
( )2. A. weakness
( )3. A. run
( )4. A. inspired
( )5. A. return
( )6. A. dread
( )7. A. volunteered
( )8. A. when
( )9. A. drove
( )10. A. feeling
( )11. A. position
( )12. A. on her own
( )13. A. politely
( )14. A. opposite
(     )15. A. took charge of
( )16. A. as usual
( )17. A. respect
( )18. A. what
(     )19. A. past
( )20. A. courage

B. grab
B. sickness
B. sink
B. determined
B. adjust
B. astonished
B. attempted
B. as
B. directed
B. organs
B. environment
B. in person
B. calmly
B. separate
B. took place of
B. as a rule
B. envy
B. how
B. same
B. will

C. count
C. darkness
C. jump
C. honored
C. contribute
C. depressed
C. continued
C. until
C. accompanied
C. skills
C. status
C. to her benefit
C. briefly
C. fixed
C. took advantage of
C. as well
C. know
C. why
C. first
C. sight

D. feel
D. sadness
D. step
D. pleased
D. stick
D. frightened
D. struggled
D. after
D. sent
D. senses
D. role
D. on foot
D. tightly
D. lonely
D. took hold of
D. as a consequence
D. support
D. who
D. next
D. wisdom

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单项选择题

男，25岁。高热伴皮肤瘀斑1周。查体：T39℃，胸部和下肢可见瘀斑，浅表淋巴结不大，巩膜无黄染，胸骨压痛（＋），右下肺可闻及少许湿啰音，心率110次／分，律齐，腹软，肝脾肋下未触及。检查：Hb75g/L，WBC2.8×109/L，Ph20×109/L，骨髓穿刺检查示增生极度活跃，见大量细胞胞浆内有粗大颗粒，易见Auer小体，有的呈柴捆状，POX染色阳性和强阳性。最可能的诊断是（）

A.急性淋巴细胞白血病

B.急性单核细胞白血病

C.急性粒单核细胞白血病

D.急性早幼粒细胞白血病

E.急性巨核细胞白血病
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