氟尿嘧啶的作用机制() A.减少四氢叶酸生成而抑制蛋白质的合成 B.作用于核糖体而抑 发布时间:2017-04-07 20:27 │ 来源:www.tikuol.com 题型:单项选择题 问题: 氟尿嘧啶的作用机制()A.减少四氢叶酸生成而抑制蛋白质的合成B.作用于核糖体而抑制蛋白质的合成C.抑制DNA多聚酶D.损害细胞膜而致细胞毒作用E.与嘌呤或嘧啶竞争而抑制核酸合成
题型:单项选择题 读短文,填表。 Hello, I am Taiko. I get up at 6:00 in the morning every day. I eat breakfast at 6: 30. Then I go to school at 7:00. We do morning exercises at 8:00. We have three classes in the morning and three in the afternoon. I go home at 5:00 p. m. I play basketball at 5:30. I eat supper at 7:30. Then I do my homework. I go to bed at 9:00. This is my day. What about yours?○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Taiko's day get up 1.___________ 2._____________ 7:00 a.m. Morning exercises 3.___________ go home 4.___________ 5._____________ 5:30 go to bed 6.___________ 查看答案
题型:单项选择题 补写出下列名篇名句中的空缺部分。(6分)(1) ,雨脚如麻未断绝。自经丧乱少睡眠, !(杜甫《茅屋为秋风所破歌》)(2)斜阳草树, ,人道寄奴曾住。想当年,金戈铁马, 。(辛弃疾《永遇乐·京口北固亭怀古》)(3)是故弟子不必不如师, , ,术业有专攻,如是而已。(韩愈《师说》) 查看答案