Ⅳ型超敏反应的特点不包括（）
A.发生慢，又称迟发型超敏反应
B.有抗体和补体参与
C.有效应T细胞及单核细胞参与
D.与IL-2等细胞因子及颗粒酶等细胞毒性介质有关
E.局部损害是以单核细胞与淋巴细胞浸润为主的炎症
参考答案：B
解析：Ⅳ型超敏反应过程与细胞免疫基本一致，无抗体、补体参与，由效应T细胞及其产生的细胞因子或细胞毒性介质引起；局部损害是以单核细胞、淋巴细胞浸润为主的炎症。
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| From the window of my room,l could see a tall cotton-rose hibiscus(木棉树).In spring, when green leaves were half__1__by mist(薄雾),the tree looked very charming dotted with red blossom. This__2__neighbor of mine often set my mind working.I__3__regarded it as my best friend. However, when I opened the window one morning,__4__, the tree was almost bare as a result of the storm the night before.__5__by the situation, I was seized with sadness at the thought" all the blossom is doomed to(注定 )fall". I couldnot help__6__with emotion : thecourse of life never runs__7__, for there are so many ups and downs. The__8__of my life saw my beloved friends parting one after another. Isn't it__9__to the tree shedding (脱落) its flowers in the wind? This event faded from my__10__as time went by. One day after I came home from the countryside,l found the room hot and casually opened the window. Something outside __11__my eye and dazzled me. It was a plum tree all red with blossom__12__beautifully by the sunset. The suprise discovery overwhelmed me with pleasure.I__13__why I had no idea of some unyielding(顽强的) lifesprouting (发芽) over the fallen petals (花瓣) when I was__14__for the hibiscus. When the last petal dropped , all the joyful admiration for the hibiscus sank into oblivion(忘却) asif nothing was__15__,until the landscape was again bright with the red plum blossom to__16__people of life's changing and continuance. Can't it be said that life is actually a symphony,a harmonious composition of loss and__17__. Standing by the window lost in__18__for a long time, I realized that no scenery in the world__19__unchanged. As long as you keep your heart bathing in the sun, every dawn will__20__a fine prospect for you to unfold and the world will always be about new hopes. | |||
| ( )1.A. hidden ( )2.A. interesting ( )3.A. immediately ( )4.A. to my joy ( )5.A. Struck ( )6.A. complaining ( )7.A. pleasant ( )8.A. changes ( )9.A. same ( )10.A. brain ( )11.A. grasped ( )12.A. set off ( )13.A. asked ( )14.A. nervous ( )15.A. kept ( )16.A. remind ( )17.A. harvest ( )18.A.attention ( )19.A.lasts ( )20.A.present | B. revealed B. amusing B. gradually B. to my relief B. Hit B. working B. polite B. performance B. popular B. memory B. fixed B. set up B. doubted B. sorry B. saved B. remember B. earning B.thought B.continues B.form | C. exposed C. exciting C. gently C. to my surprise C. Awakened C. crying C. smooth C. struggles C. familiar C. body C. caught C. set down C. stared C. missing C. left C. recall C. benefit C.considemtion C.remains C.award | D. shown D. inspiring D. softly D. to my satisfaction D. Beaten D. sighing D. calm D. revolution D. similar D. store D. pulled D. set out D. wondered D. happy D. preserved D. recognize D. gain D.expectation D.holds D.design |