里面有多少个八分之一

As he didn't know the lesson at_____,Tom failed his English test. 英语：fall down 和 goes down 的区别? 1.植物基因的外显子中碱基对的增添或缺失,一定导致基因数目的变化为什么错2.用秋水仙素处理二倍体植物(2N)根尖分生区细胞,细胞最多出现2N个四分体 外显子 内含子 编码区 非编码区 启动子 终止子 增强子 的关系 求大师…………………………………… 启动子和终止子位于编码区,编码区中被隔开的外显子,内含子有多个启动子和终止子吗?如题 什么是启动子、终止子、内含子、外显子? 词组互译 1.和……一样高 2.go on an outing 3.I hope so词组互译1.和……一样高2.go on an outing3.I hope so4.上课 至少写出5个与go相关的短语并翻译成中文 形容词比较级变化long wild quiet short smart fine nice thin calm big funny heavy early outgoing interesting athletic serious beautiful哪些是加er,哪些是加r,哪些双写最后一个辅音加er,辅音字母加加y结尾的单词,变y为 形容词比较比较级变化规律 bee和meet的读音一样吗 急 Learning a foreign language/culture will impair the learning of one’s mother tongue and culture?what do you think about it? 若合成蛋白质的基因中有3000个碱基对,则合成的蛋白质中最多有氨基酸500个这句话哪里有问题呢? “若合成蛋白质的基因中有3000个碱基对,则合成的蛋白质中最多有氨基酸500个”这个说法对吗? like a football.football是球类,应该不加冠词,为什么前面还加 那是谁的足球?是他们的. （） football is that? It's（） That's a good place_______football.A play with Bto play Cto play the D to play with s0me students ask for more food than they can eat and others often forget to turn offthe lights when they leave the classroom.怎么译? they eat lots of healthy food变一般疑问句 they eat lost of healthy food改为同义句 这里是 They eat （ ）（ ）（ ）healthy food Susan could't catch up with her classmates w____ your help. Susan couldn't catch up with he classmates w___your help. He ______ ______ ______ ______ ______ ______ catch up with others.怎么填?He decided to catch up with others.（同义句） 求一篇:Let's Ride Bikes为题的英语作文 80词左右 healthy food and drink作文60词 Only __ English doer not mean__ the language.为什么要填learning about 和learning?为什么不能颠倒呢? Only____English doesn't mean ____the language.A.to learn,tolearn B.learning,learning C.learning about,learn D.learning about,having learned详解. The only language -easy -to learn is the mother language"简单"不是饰learn吗,为什么不用easily这句话的结构搞不懂 飞虎队的英文简写是什么? 谁知道中国哪里可以考SDU（飞虎队）吗? 警察咧的 Traveling is very interesting.these days traveling doesn't only mean going to another city .Traveling is very interesting.these days traveling doesn't only mean going to another city or v____famousplaces.Nowadays people usually travel to f_____.Peopl