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【简答题】
某同学用显微镜观察番茄果肉细胞临时装片,结果如图 ( 示例: [ 4 ] 细胞质 ) 。 据图回答: (1) 临时装片制作过程中,用镊子夹起,使其一边先接触载玻片上的水滴,然后缓缓放下,目的是避免下出现 ________ 。 (2) 观察装片时,要将图 a 细胞移到视野中央,玻片向 ________( 填 “ 左 ” 或 “ 右 ”) 移动。 (3) 与口腔上皮细胞相比,番茄果肉细胞特有的结构有细胞壁和 [ 2 ]________ ;这两种细胞都具有的能量转换器是 ________( 填 “ 叶绿体 ” 或 “ 线粒体 ”) 。 (4) 不同品种的番茄果实颜色不同,根本原因是 [ ]________ 中的遗传物质不同。
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【单选题】在旧金山、纽约等地人们把华侨、华人聚居的地方叫做“唐人街”,可见唐朝在人们心目中的地位。唐玄宗统治前期,唐朝进入全盛时代,这种盛世景象历史上称为
A.
贞观遗风
B.
开元盛世
C.
贞观之治
D.
开皇之治
【单选题】两栖动物是指（ ）
A.
既能在水中生活，又能在陆地上生活的动物
B.
幼体生活在陆地上，成体生活在水中的动物
C.
幼体生活在水中，成体生活在陆地上或水中的动物
D.
既可在空中，又可在陆地生活的动物
【简答题】阅读理解 Tom and Mike were good friends. Sometimes they were kind to each other, somctimes they were not. But some of their classmates said they were like brothers. One day they went out for a walk togeth...
【简答题】Tom and Mike were good friends. Sometimes they were kind to each other, and sometimes they were not. But all of their classmates said they were like brothers. One day they went out for a walk together...
【简答题】A．They were schoolmates. B．They are very good friends. C．They were both businessmen years ago. D．They are professors of a certain university.
【单选题】晚唐诗人李商隐在《咏史》一诗中写道:“历览前贤国与家,成由勤俭败由奢”,这是诗人对唐朝由鼎盛走向衰落的感悟。历史上把唐朝鼎盛时期称为()
A.
文景之治
B.
光武中兴
C.
开元盛世
D.
开皇之治
【简答题】They were good friends and never q______ with each other.
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