下列树种，果实成熟时为黄色者的是（）。A、银杏 B、山楂 C、樟树 D、樱桃 发布时间：2019-02-19 22:36 │ 来源：www.tikuol.com 题型：单项选择题 问题： 下列树种，果实成熟时为黄色者的是（）。A、银杏B、山楂C、樟树D、樱桃
题型：单项选择题 已知f（x）=loga（x+1），g（x）=loga（x-1）（a＞0，a≠1）．设h（x）=f（x）-g（x）（1）求函数h（x）的定义域；（2）判断函数h（x）的奇偶性，并予以证明． 查看答案
题型：单项选择题 完形填空 I always remembered the first time I took part in an English composition competition. "Right! Dean would be the __11__ of our class to participate in the English composition competition," my classmates said. I was too __12__ to speak when I heard what my classmates said. In order not to __13__ short of my classmates'__14__, I trained myself very hard for the hope of being the __15__ of the competition, which would take place a month later. I __16__ a lot of vocabulary, sentence structures and __17__ rules and read many good or renowned articles. Not having I __18__ pretty well, the day came. Every candidate __19__ me looked so wellprepared and __20__. "Only 1. 5 hours. Start," a supervisor suddenly said. Seeing the __21__ "What do most teenagers concern nowadays?" I was nervous and got __22__ block. What's worse, other candidates had begun writing. Moments later, I __23__ myself, took a deep breath, and began brainstorming ideas __24__ the topic. I quickly wrote down the composition structure, central theme, and __25__ necessary elements. As the finishing time was __26__, I tried my best to accelerate my writing. Unfortunately, __27__ my failure of time management, I left my composition incomplete. My final draft looked like a robot __28__ legs were broken. The result came out two weeks later. To my surprise, I got the second prize! All my classmates cheered for me. This encouraged me a lot. __29__ I was not the first prize winner, I could still __30__ pride and happiness spreading around me. ( )1. A. player ( )2. A. proud ( )3. A. get ( )4. A. promises ( )5. A. success ( )6. A. memorized ( )7. A. grammar ( )8. A. remembered ( )9. A. besides ( )10. A. easy ( )11. A. problem ( )12. A. writer's ( )13. A. persuaded ( )14. A. with ( )15. A. another ( )16. A. approaching( )17. A. thanks for ( )18. A. of which ( )19. A. However ( )20. A. smell B. choice B. delighted B. be B. expectations B. beater B. copied B. phrase B. prepared B. except B. nervous B. idea B. teacher's B. said B. towards B. the other B. accessing B. due to B. which B. As a result B. touch C. representative C. nervous C. lose C. dreams C. winner C. read C. pattern C. started C. except for C. interested C. topic C. thinker's C. encouraged C. at C. other C. finishing C. as a result C. whose C. Worse still C. sense D. person D. surprised D. fall D. words D. victory D. wrote D. term D. completed D. as well as D. unconfident D. question D. composer's D. calmed D. for D. others D. ending D. on account D. that D. Although D. realise 查看答案
题型：单项选择题 按苷键原子不同，苷可以分为A．原生苷和次生苷B．香豆素苷、黄酮苷、蒽醌苷、木脂素苷等C．单糖苷、双糖苷、三糖苷等D．单糖链苷、双糖链苷、三糖链苷等E．O—苷、S—苷、N—苷和C—苷 查看答案