一个很纠结的英文句子,A new phenomenon visible at Managua’s major intersections is waves of vendors and beggars,many of them children,who mob cars at the stoplights.如果第一句话是表语从句that是不能省略的把is 后为什么

有一个四肽,经胰凝乳蛋白酶水解后产生一个二肽(Ser-Arg)与两个Phe(Ser丝氨酸；Arg精氨酸；Phe苯丙氨酸),该四肽的序列为：(单选1分)A．Phe-Ser-Arg-Phe B．Phe-Phe-Ser-Arg C．Ser-Arg-Phe-Phe D．以上答案都 一个很纠结的英文句子,A new phenomenon visible at Managua’s major intersections is waves of vendors and beggars,many of them children,who mob cars at the stoplights.如果第一句话是表语从句that是不能省略的把is 后为什么 氨基酸英文简写怎么读氨基酸的简写,如Ala,Phe,Gly等是怎么读的?是一个字母一个字母,还是连起来的,又或是全称,如Phentermine,Glycolic? 表达心情纠结的句子 一个关于非谓语的纠结问题,they investigated humour using the new technique这里的 using 这个部分 是做 句子的状语对吧?修饰的是VERB 这个句子读起来很对很好吧?-IESLT原话 可是修饰动词的状语 为什么要 上帝的安排总是很纠结 英文怎么说 求一个英文句子的中文翻译,请高人指点New technology, apply intelligent building constantly by new product, make market capacity of intelligent building expand constantly 一个初三英文被动语态句子When will the party_____(hold)?held 还是held呢?、小纠结可以追分 英文a new year a new choice 表达心情纠结或崩溃的句子 求表达内心纠结的句子 3月12日篮球公园的一个插曲,英文的,歌词是this is a new world this is a new start 根据汉语意思完成英文句子,每空一词1.Can you tell me _____ _____ ______ ______ the park?2.那位妇女正在向一个警察问路The woman _____ _____ _____ ______ to a policeman.其实我纠结在了第一题上，它这道题真的是 我是英文盲.帮忙翻译一个句子The new should be the topest什么意思.谢谢~ :) Phe-Leu-Val-Arg四肽的等电点 对一个英文句子的疑惑,求解答.McDowell hopes all visitors to New York will feel safer when they see the USS New York keeping watch in the city's harbor,as a symbol of strength and national resolve.中的“ keeping watch”有没有问 看看这篇英语作文那些句子不太好,为考四级的练习.The Imoprtance of Keeping a Good MoodNowadays ,with the development of economy,people must face constantly work and a lot of difficulties so that live with pressure everyday. the phe 请问英文的Happy New Year.可以说成Happy a New year.有这种说法吗?