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紫衣Helen
kasumi0330
1. How to spend my weekend Iam going to prepare for my lessons because the Mid-term exam is coming. I am sure if I have good preparation, I will get good grades. I am going to help my parents do
smilejoyce922
the development of biology is changing our world 21世纪的新生科学生物学,使人充分了解达尔文的“适者生存”的伟大名言! 生物学的应用前景很广泛。遗传学,基因学,生态学等延伸学对人类的发展起了巨大的推动作用,
沉默的玫瑰
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甜品达人范范
一种是含有NaNO3的Schlösser培养液,它能提供氮源用以保存微生物并预备种菌。相反,第二种培养液把NaNO3替换为尿素,用作培养细菌的氮源。尿素总供给量随总供给时间而变化。在500mL锥形烧瓶内装有200mL
1. How to spend my weekend Iam going to prepare for my lessons because the Mid-t
1.In this experiment, a full coat, a coat of good-looking, able-bodied rabbits,
favorite book In the morder world,it is very necessary to read good books .l lik
1、好的文章源于生活,写你的所见、所闻;写你的亲身体会;写出你的真情实感,这样的文章,才会生动感人。2、写作并非一朝一夕就能成功之事。但面对当今的应试教育,你不
alum solution which means the skin is rarely used in the country, trichlorfon pe
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