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核苷酸类化合物具有重要的生物学功能，它们参与了生物体内几乎所有的生物化学反应过程。现概括为以下五个方面：① 核苷酸是合成生物大分子核糖核酸 (RNA)及脱氧核糖核酸(DNA)的前身物，RNA中主要有四种类型的核苷酸：AMP、GMP、CMP和UMP。合成前身物则是相应的三磷酸核苷 ATP、GTP、CTP和UTP。DNA中主要有...

then in the Electorate of Cologne in western Germany he moved to Vienna in his early enties and settled there studying with Joseph Haydn and quickly gaining a reputation as a virtuoso pianist. Beethoven's hearing gradually deteriorated beginning in his enties yet he ...

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1、 未来是万物互联&万物智能黄金十年，市场空间可观。物联网市场规模超万亿，未来仍存广阔市场空间。 目前中国物联网市场规模已超过 2 万亿元人民币，同比增速持续维持在 20%以上，同时 IDC 预计 2025 年全球物联网市场规模达到 1.1 万亿美元。物联网市场规模的快速增长主要来源于： （1） AIoT ...

There is a great deal to learn from Hal's expert approach.从哈尔熟练的方法中可以学到很多。learn with例句：Thanks for giving me this opportunity to communicate and learn with you.同时，也很感谢领导给我这个难得的机会，让我与大家一起来交流、学习。They find it easy to practice using ...

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许多服装项目,如点点amp;#039;莱尔斯坦还有弗洛伦其中很受白领欢迎的都是在天河城开设的,而且年轻人s喜欢的休闲装也很密。JUSCO最有特色的日本寿司和特色菜在柜台前很受欢迎。与天河城一街之隔的宏城广场也有很多特色服装店,年轻时尚,价格也比较合适。王府井百货(北方游客的最爱)逛王府井可以逛完整个农林下路。有...

5、It's been an age since we've seen them.我们有很长一段时间没有见到他们了。6、Am I right in thinking we've met before?我们以前见过面，我说得对吗？7、We've expanded the business by opening two more stores.我们增开了两个商店以扩展业务。8、We've certainly improved on last...

3、句子结构：why don't+主语+动词。例句：Why don't we go and see it together?咱们为什么不一起去看看呢？Why don't you look in on me next time you're in town?你下次进城顺便来看看我好吗？Why don't you come over to England in the summer?你为何不在夏天来英格兰呢？It's ...

我自己的事自己管，不用其他人操心。4、I think one's got to consider all the possibilities.我认为有必要考虑到各种可能性。5、Exercising the body does a great deal to improve one's health.锻炼身体对增进健康大有益处。6、It's the collision of disparate ideas that alters one's ...