题目

若曲线与直线没有公共点，则实数b的取值范围是        。 答案：请阅读下面短文，选择最佳答案，将其标号在答题卡上涂黑。There are many kinds of friends. Some are always        you, but don't understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only        friends leave footprints.I shall always recall the autumn and the girl with the        . I know she will always be my best friend. I could see the yellow leaves         in the cool wind. In such a        , I liked walking alone in the leaves,         to the sound of them. Autumn is a harvest season. However,         is uninteresting. The free days always get me      . But one day, the sound of a violin       into my ears like a stream flowing in the mountains. A young girl, standing in the wind, was        in playing her violin.  I had        seen her before. The music was so nice that I listened quietly. Lost in the music, I didn't know that I had been     _  there for so long but my existence(存在) did not seem to disturb（打扰）her.Every day she played the violin in the corner of the building        I went downstairs to watch her performance. The autumn seemed no longer lonely and life became       . Though we didn't know each other, I thought we were already good       . One day, when I was listening carefully, the sound suddenly       . To my surprise, the girl came over to me. “You must like violin，” she said. “Yes. And you play very well. Why did you stop?” I asked. Suddenly, a        expression appeared on her face and I could feel something unusual. “I came here to see my grandmother, but now I must leave, I once played very badly. It was your listening every day that       me,” she said. “In fact, it was your playing        gave me a meaningful autumn，” I answered, “Let's be friends.” The girl smiled, and so did I.I never heard her play again in my life. But I will always remember the fine figure(身影) of the girl. She is like a       －so short, so bright, like a shooting star giving off much light that makes the autumn beautiful.小题1:A．withB．forC．againstD．to小题2:A．goodB．trueC．reliableD．stubborn小题3:A．soundB．songC．partnerD．violin小题4:A．shakingB．hangingC．risingD．floating小题5:A．seasonB．situationC．dayD．weather小题6:A．watchingB．listeningC．seeingD．hearing小题7:A．journeyB．workC．lifeD．view小题8:A．boredB．determinedC．excited D．concerned小题9:A．flowedB．grewC．enteredD．ran小题10:A．lostB．activeC．busyD．interested小题11:A．onceB．neverC．frequentlyD．usually小题12:A．waitingB．stoppingC．standingD．hearing小题13:A．becauseB．butC．whenD．before小题14:A．interesting B．movingC．boringD．tiring小题15:A．partnerB．listenersC．playersD．friends小题16:A．stoppedB．beganC．goneD．changed小题17:A．happyB．sadC．strangeD．calm小题18:A．surprisedB．excitedC．encouragedD．interested小题19:A．thatB．whichC．itD．who小题20:A．songB．dreamC．windD．sister