题干

在一个装片盒里,有一张细菌和一张酵母菌永久装片的标签脱落了,你可以依据什么把它们区分开来,重新贴上标签

A:细胞质的有无

B:细胞壁的有无

C:细胞核的有无

D:遗传物质的有无

上一题 下一题 0.0难度 选择题 更新时间:2018-06-19 12:52:13

答案(点此获取答案解析)

C

同类题2

根据短文理解,选择正确答案。

My Hero

    What does it mean to be a hero? I think a hero is someone who goes out of his way to make others happy. My hero is Mr. Wright, my chorus(合唱队) teacher.

    When I was 12 years old, my grandparents passed away. I was really close to them, and losing them was the hardest thing I've ever had to1through. I couldn't eat, sleep, or think; I felt like I couldn't even breathe. It was as if my whole world had fallen down from under me, and I2into this huge hole of depression(抑郁).

    3I was battling depression, I was determined to make my high school years the best of my life. It was difficult to be 4, but I had to try. I joined Women's Choir. Mr. Wright was the choral director and he was so funny that the first day, I just knew I had made the best5of my life. As the year progressed, I loved chorus more and more. I began to smile again and really enjoy 6.

    Then one day that all changed. My friends—or those that I thought were my friends—started talking about me behind my back. I was7 , and I sat by myself. Mr. Wright came over and asked what was wrong. The look in his eyes told me that I could8him. Trying hard to9 back tears, I told him the whole story.

    When I finished, he nodded and told me, “If you never learn anything from me, learn this: No one is worth 10 your joy.” What Mr. Wright said really11a chord (心弦) in my heart. He 12 cared about me and what was going on. I'll never be able to thank him enough, because he not only saved me but has13every day of it since. Any time I feel like giving 14, I remember Mr. Wright's words and push forward.

    I'm proud to say that I 15 my depression, and I'm now a senior. I'm still a16of chorus, and now I'm also in the best choir at my school.

Mr. Wright is a hero 17 everyone he meets. He cares about every single person who walks through his door, and he loves what he does more than any other teacher I've known. That's18  he deserves to be Educator of the Year. He deserves the19 not just this year but every year.

    I'm glad I had the opportunity to meet you, Mr. Wright. You are an 20teacher, and I hope you realize that. You're my hero.

同类题3

同学们开展语文课外学习活动,其中一组的探究主题是“中国梅花文化”,以下是同学们整理的材料。请根据要求,完成小题。

    自古以来,梅花就是中国文人喜爱的形象之一,这种喜爱起自《诗经》,历经汉魏、隋唐,到了宋代进入颠峰时期。林和靖以一句“疏影横斜水清浅,暗香浮动月黄昏”写出了梅花不求识赏的隐逸孤清①_____“遥知不是雪,为有暗香来”,王安石的诗句又使梅的形象于“孤清”中多了几分高洁傲然;“无意苦争春,一任群芳妒。零落成泥碾作尘,只有香如故”,陆游的《卜算子·咏梅》抒写出梅花不堕凡俗的坚贞自守;而苏轼的《定风波·红梅》中“诗老不知梅格在,吟咏,更看绿叶与青枝”一句,则将高标俊逸的“梅格”与作者旷达超脱的人格融为一体。“何方可化身千亿,一树梅花一放翁”,极尽表达出诗人愿意化身千万梅花的浪漫情怀。

    可以说,中国文人从梅花的品性中看到了自己的理想人格。它隐逸孤清,高洁傲然,坚贞自守,高标俊逸,成为凌寒绽放于冬日的精神之花。历经岁月磨砺,梅花的象征意义丝毫不减。一代领袖***的“俏也不争春,只把春来报。待到山花烂漫时,她在丛中笑”,更是赋予了梅花乐观坚韧②_____昂扬向上的民族精神。

    梅花的形象不仅存在于诗歌中,还广泛地存在于我国的绘画、书法、音乐等艺术形式之中。这形成了中华民族特有的一种文化现象,值得同学们探究并关注。