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当西方主要资本主义国家相继完成工业革命之时,中国社会的发展几乎陷停滞状态。1840年,英国发动了侵略中国的鸦片战争,中国的大门被打开,标志着我国进入近代社会。近代中国的基本国情是(   )
A . 落后的自给自足的经济体 B . 半殖民地半封建社会 C . 正在进行反帝反封建的民主革命 D . 逐步走上了现代化建设的道路
健康的正确含义是()

A . 肢体健全、没有疾病 B . 身体健康、心理健康 C . 身体强壮、心情愉快 D . 身体上、心理上和社会适应的良好状态
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Letting kids learn more about science at an early age is easier than you think. It is happening all around us, and you can use daily things to arouse (激发) your children's interest. Most parents believe it is difficult to help their children with science. But you don't need a high scientific degree to teach your children science. All you need is that you're willing to try, to see the world, and to take the time to encourage their natural curiosity. When they strongly want to know about something, they get the ticket to the unknown world.

You can help by having an active attitude (态度) towards science yourself. Then start simply by asking your children questions about the things you see every day. Next listen to their answers without judging (评判) them, which will improve their confidence (自信), and help you decide just what your children know or do not know.

Different kids have different interest, so they need different kinds of science projects. Collecting rocks may interest your young daughter, but your older son may need something more to deal with it. Knowing your children is the best way to find enjoyable learning activities. Here are some more pieces of advice: Choose activities that are the right level of difficulty. If you are not sure, pick something easier. Read the suggested ages on any projects, books, and then make sure that the activity is proper for your children. Let your children choose the project or activity themselves. It's easy enough to ask rather than force them. Suggest choosing 2 or 3 things your children can do. When a child picks something he or she is interested in, he or she will enjoy it and learn more from it.

  1. (1) What do most parents believe?
    A . Science should be learnt early. B . Science teaching needs time. C . Helping children with science is hard. D . Many children have no interest in science.
  2. (2) What does the underlined word "curiosity" mean in English?
    A . The spirit of changing. B . The ability of understanding. C . The method of thinking. D . The feeling of wondering.
  3. (3) How can we start to help children?
    A . By judging them. B . By asking them questions. C . By collecting their answers. D . By deciding what interests them.
  4. (4) Which is the best way to find enjoyable learning activities for children?
    A . To know the children. B . To improve their confidence. C . To have an active attitude. D . To offer different kinds of projects.
  5. (5) What can we mainly learn from the passage?
    A . How to choose activities for children. B . Why to let children learn science earlier. C . Why not force children to learn science. D . How to arouse children's interest in science.
如图,线段 ,点P是线段 上的一个动点,分别以 为边在线段 的同侧构造菱形 和菱形 ,且 ,M是菱形 的对角线交点、N是菱形 的对角线交点,连接 ,则线段 的最小值为

关于细菌和真菌的说法,正确的是(     )


A . 细菌和真菌对人类一般都是有害的 B . 遇到不良环境时,细菌通过芽孢繁殖 C . 细菌都是单细胞生物,真菌有多细胞的,也有单细胞的 D . 酵母菌与乳酸菌结构的主要区别是后者有成形的细胞核
I still find it terrifying to find myself (surround) by large numbers of horses.
为了探求生命的起源和生物的进化,科学家们进行了大量的研究。如图是美国科学家米勒等模拟原始地球条件的实验装置,请尝试对他的实验过程进行总结。

  1. (1) 图中从1处泵入的气体成分模拟的是,与现在地球上的大气相比缺少了
  2. (2) 火花放电的作用是模拟,为其提供能量。
  3. (3) 搜集到的证据:沉积在3处的物质相当于中的多种氨基酸等有机小分子物质。
  4. (4) 得出的结论是在原始地球条件下,由物质合成构成生命的有机小分子物质是可能的。

    细胞色素C是构成生物体的一种重要蛋白质,它是由许多氨基酸组成的。如表所示大猩猩与猕猴、兔、鸡、响尾蛇和金枪鱼等5种动物中细胞色素C的差异。请据表回答问题:

    生物名称

    猕猴

    响尾蛇

    金枪鱼

    与大猩猩的氨基酸的差异数目

    1

    6

    12

    13

    20

  5. (5) 由表中数据可知,与大猩猩的亲缘关系最近的是
  6. (6) 你认为以上资料涉及的研究方法是
  7. (7) 根据表格写出以上六种动物在进化历程中的地位由低级到高级的顺序:
  8. (8) 上述几种动物都与其生活环境相适应,这种对环境的适应是通过获得的。
惯性是物体的一种性质,下列说法正确的是(    )
A . 物体运动状态改变时才有惯性 B . 物体速度越大惯性也越大 C . 静止或匀速运动的物体没有惯性 D . 物体质量越大惯性也越大
图1中被测物体A的长度是 cm;图2中弹簧测力计的示数为 N;图3中体温计的示数为 ℃。

已知菱形ABCD的边长为5cm,对角线AC=6cm,则其面积为cm2
小华的妈妈带200元钱去超市购物,买水果用去53.75元,买蔬菜用去26.35元,还剩多少元钱?
未成年人犯了罪,因为受到法律的特殊保护,教育下就可以了。
创新改变生活,感受创新,下列说法正确的是(    )

①生活处处有创新,创新是一种生活方式

②生活的各个领域都需要创新,也都可以创新

③创新是个人的创意行为,它与任何团队、集体的力量无关

④创新不只是灵光乍现的顿悟,更需要年复一年的积累

A . ①②③ B . ①②④ C . ①③④ D . ②③④
一滑块在水平地面上沿直线滑行,t=0时速率为1 m/s,从此刻开始在与速度平行的方向上对其施加一水平作用力F,力F和滑块速度v随时间的变化规律分别如图甲和乙所示,则(两图取同一正方向,取重力加速度g=10 m/s2) (   )

A . 滑块的质量为0.5 kg B . 滑块与水平地面间的动摩擦因数为0.05 C . 第1 s内摩擦力对滑块做功为-0.5 J D . 第1 s内力F的平均功率为1.0W

根据下图所示区域为长期的热点地区,回答以下小题。

  1. (1) 该地区石油资源丰富,其石油资源集中分布在

    A . 地中海及其沿岸地区 B . 波斯湾及其沿岸地区 C . 红海及其沿岸地区 D . 里海及其沿岸地区
  2. (2) 传统民居与当地自然环境的关系密切。下列属于该地区传统民居的描述是

    A . 高脚屋—凉爽、防潮 B . 墙厚窗小—防晒又凉快 C . 轻质木材作为建筑材料—防震 D . 窑洞——冬暖夏凉
Spell the words according to phonetic symbols and write out their Chinese meanings
  1. (1) /'fɜːstlɪ/
  2. (2) /flaʊə(r)/
  3. (3) /æd/
  4. (4) /'sekəndlɪ/
  5. (5) /pɔ:(r)/
  6. (6) /'ʌvn/
  7. (7) /waɪd/
  8. (8) /'mikstʃə(r)/
  9. (9) /'mɪulɪi:tə(r)/
  10. (10) /'sprɪŋkl/
英国工业革命接近完成之际,卡莱尔在《文明的优思》中发出感叹:“当整个国家仅仅只在乎金钱和被金钱所主宰的时候,再下一步便不是踏在土地,而是悬在深不见底的深渊上空。”可见,克莱尔注意到了英国(    )
A . 煤矿大量开采导致土地塌陷 B . 工业革命中社会财富急增 C . 经济发展与人文精神的对立 D . 工业革命中人文精神的缺失
唐代诗人刘得仁系皇亲国戚,其兄弟为达官显贵,而他“出入举场三十年,竟无所成”;唐宗室子弟李洞屡考不中,竟想去皇陵哭诉。两人经历反映了唐代(   )
A . 科举考试不重考生诗才 B . 选官制度阻断贵族入仕 C . 科举取士体现公平公正 D . 中央政府剥夺宗室特权
能量有电能、风能、等不同形式,运动的物体也有能量,叫
如图表示一植物的非绿色器官在不同的氧浓度下气体交换的相对值的变化,下列有关叙述正确的是(     )

图片_x0020_742333592

A . 图中曲线QR区段下降的主要原因是氧气浓度增加,有氧呼吸受抑制 B . Q点只进行无氧呼吸,P点只进行有氧呼吸 C . 若图中的AB段与BC段的距离等长,此时有氧呼吸消耗的葡萄糖量等于无氧呼吸 D . 氧浓度应调节到Q点的对应浓度,更有利于水果的运输
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