题目

某学生在“探究培养液中酵母菌种群数量的变化”实验中，根据实验结果绘制出如图所示的曲线图．下列有关分析不正确的是（） A . 实验过程中酵母菌种群的年龄组成发生改变 B . 种群数量在不同时间的增长速率可能相同 C . 取适量培养液滴于血细胞计数板，盖上盖玻片显微镜观察计数 D . 每次取样前应将培养瓶振荡摇匀It was a busy morning, about 8:30, when an elderly gentleman in his 80s came to the hospital. I heard him saying to the nurse that he was in a hurry for all appointment(约会)at 9:30. The nurse had him take a  31 in the waiting area,  32 him it would be at least 40 minutes  33  someone would be able to see him. I saw him  34 his watch and decided, since I was   35 busy—my patient didn’t  36 at the appointed hour, I would examine his wound. While taking care of his wound, I asked him if he had another doctor’s appointment. The gentleman said no and told me that he  37 to go to the nursing home to eat breakfast with his  38 . He told me that she had been   39  for a while and that she had a special disease. I asked if she would be   40 if he was a bit late. He replied that she   41 knew who he was; that she had not been able to  42  him for five years now. I was  43 , and asked him, “And you  44 go every morning, even though she doesn’t know who you are?” He smiled and said, “She doesn’t know me, but I know who she is.” I had to hold back   45  as he left. Now I  46 that in marriages, true love is  47 of all that is. The happiest people don’t  48 have the best of everything; they just  49 the best of everything they have.   50  isn’t about how to live through the storm, but how to dance in the rain. 1.                A．breathe        B．test            C．seat D．break 2.                A．persuading      B．promising       C．understanding D．telling 3.                A．if             B．before         C．since D．after 4.                A．taking off       B．fixing           C．looking at D．winding 5.                A．very           B．also            C．seldom   D．not 6.                A．turn up         B．show off        C．come on  D．go away 7.                A．needed        B．forgot          C．agreed   D．happened 8.                A．daughter       B．wife           C．mother   D．sister 9.                A．late            B．well            C．around   D．there 10.               A．lonely          B．worried        C．doubtful   D．hungry 11.               A．so far          B．neither         C．no longer  D．already 12.               A．recognize       B．answer         C．believe    D．expect 13.               A．moved         B．disappointed    C．surprised  D．satisfied 14.               A．only           B．then           C．thus  D．still 15.               A．curiosity        B．tears           C．words D．judgment 16.               A．realize         B．suggest         C．hope D．prove 17.               A．agreement      B．expression      C．acceptance D．exhibition 18.               A．necessarily      B．completely      C．naturally   D．frequently 19.               A．learn          B．make          C．favor D．try 20.               A．Adventure      B．Beauty         C．Trust  D．Life