A:细胞细小,结构简单
B:只能寄生在活的细胞里
C:能使人、禽致病
D:能够利用它研制病原疫苗
沿河分布是中南半岛城市分布的主要特征之一,其中老挝首都万象就分布在( )
补写出下列名篇名句中的空缺部分。
①以死明志的气节在文天祥的《过零丁洋》一诗中得到了鲜明的体现,这两句诗是____,____。
②李白《行路难》中形象生动地描写“行路难”的诗句是:____,____。
③《醉翁亭记》中写出醉翁言在此而意在彼,情趣所在的句子是:____,____。
Dear Dad, Happy birthday to you ! On this special day I'd like to talk to you1a special way. I don't think I am good at2you my thought face to face with you,so I'm writing to show my deep love for you.You're not a rich man or a famous person.But in my heart,you are one of the greatest3 in the world.I am4 you. You are5 interested in fame and wealth.You do6 things like paying phone bills on time,and working as a worker in your factory.The smile on your face shows you are pleased with the family.You take good care of my grandparents.You help me with my schoolwork and do some shopping with Mom on Sundays. In the past,I didn't care7 you were with me or not.Now I am sorry to say I8 you the respect before.But I am thankful for what you have done for me. I am quite lucky that I have9 a great father.And I feel happy that now I can let you10 how much I love you.You are successful as a son,a husband,a father,and a friend. Wish you happy forever! Yours,
David