【单选题】下列关于几类生物的特点的叙述,正确的是()
A.
细菌和蓝藻在结构上有其统一性,具体体现在它们都有细胞壁、细胞膜、核糖体及DNA等
B.
硝化细菌与变形虫结构上的根本区别是:前者有细胞壁,属自养型;后者无细胞壁,属异养型。这也体现了细胞的多样性
C.
颤藻与发菜的共同点是都能进行光合作用,但颤藻含光合色素,而发菜细胞中含叶绿体
D.
一个动物体的不同细胞的形态和功能有其多样性,本质上是由于不同细胞的遗传物质是不同的
【判断题】任何公民非经人民检察院批准或决定,或者非经人民法院决定,并由公安机关执行,不受逮捕。()
【简答题】One day, I happened to talk to a stranger (陌生人) on the bus. When he found out that I was from Chicago, he told me that one of his good friends lived there and he wondered if I happened to know him. At...
【简答题】Life became hard when I was 14. My mother and I moved to New York to 36 my father, who’d moved there to find 37 work when I was three years old. He had a job at a restaurant and only visited us 38 eve...
【单选题】下列是关于几类生物的特点的叙述,正确的是()
A.
细菌和蓝藻在结构上有统一性,具体体现在它们都有细胞壁、细胞膜、核糖体及相同类型的遗传物质等
B.
硝化细菌与变形虫结构上的根本区别是前者有细胞壁,营养方式属自养型,后者无细胞壁,营养方式属异养型
C.
颤藻与发菜的共同点是都能进行光合作用,但颤藻含光合色素,而发菜细胞中含叶绿体
D.
一个动物体的不同细胞形态和功能有其多样性,本质上是由于不同细胞的遗传物质是不同的
【简答题】常见细胞壁的特化类型有哪几种?说明其特点及在植物体中存在的位置。
【简答题】任何公民,非经( )并由公安机关执行,不受逮捕。
【多选题】任何公民非经()并由公安机关执行,不受逮捕
【单选题】下列关于公民的人身自由说法错误的是
A.
任何公民非经人民法院批准或者决定,并由公安机关执行,不受逮捕
D.
禁止用任何方法对公民进行侮辱、诽谤和诬告陷害
【简答题】阅读理解 One day, I happened to talk to a stranger on the bus. When he found out that I was from Chicago, he told me that one of his good friends lived there and he wondered if I happened to know him. At ...