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欧美资本主义制度建立之初,掌握着官员任免权的主要是(    )
A . 国家元首 B . 工业资产阶级  C . 文官委员会 D . 少数人或集团
如图,在△ABC中,添加一个条件:,使△ABP∽△ACB.

如果想一睹中国历史上第一个王朝都城的风采,我们可以参观下列哪一遗址(   )
A . 半坡遗址 B . 二里头遗址 C . 殷墟遗址 D . 河姆渡遗址
一个正方体木块,棱长4.5dm。要给木块的表面涂上油漆,涂油漆的面积有多大?
在88和96之间的数是

(从小到大填写)

江苏某同学宁宁暑假期间乘火车到西藏旅游,读西藏自治区和江苏省图,回答下面小题。

  1. (1) 火车进入高原后,宁宁体会到了人们说的“到了昆仑山,气息已奄奄”。两省的纬度位置相当,产生描述感受的主要原因是青藏高原(  )
    A . 地势高 B . 地形复杂 C . 气温低 D . 人烟稀少
  2. (2) 宁宁在青藏高原上可以看到的主要粮食作物和优良牲畜品种是(  )
    A . 小麦、滩羊 B . 青稞、牦牛 C . 水稻、三河马 D . 玉米、细毛羊
  3. (3) 下列资源属于西藏的优势能源的是(  )

    ①水能 ②太阳能 ③地热能 ④核能

    A . ①② B . ①③ C . ②④ D . ②③
  4. (4) 宁宁的家乡是我国著名的绿茶产区,读图回答江苏省适宜茶树生长的地区是(  )
    A . 北部地区 B . 中部地区 C . 南部地区 D . 东部沿海地区
  5. (5) 江苏省大部分属于(  )
    A . 干旱地区 B . 半干旱地区 C . 半湿润地区 D . 湿润地区
Many people go to the ______________ every day because the food there is delicious.
A . hospital B . bank C . hotel D . restaurant
补写出下面语段中的空缺部分。

“长江”一直是文人诗词中常见的意象,在这一江之上,寄托了文人各自的悲欢情怀。唐开元年间,诗人王湾在北固山下稍作休息后,天还未亮又开始乘船赶赴前路,面对江水,以“”流露出了昼夜转接、时序交替之际的乐观积极心态。安史之乱后,杜子美在《登高》中,站在三峡岸边,俯视奔流不息的江水,以“”的壮景传达出韶光易逝、壮志难酬的沉郁悲凉。北宋时期,死里逃生的苏东坡来到湖北黄州,面对东去的大江,在《念奴娇·赤壁怀古》中以“”来缅怀历史长河中的英雄豪杰。

任务型阅读

    Youth sport has the potential to accomplish three important objectives in children's development. First, sport programs can provide youth with opportunities to be physically active, which can lead to improved physical health. Second, youth sport programs have long been considered important to youth's psychosocial development, providing opportunities to learn important life skills such as cooperation, discipline, leadership, and self-control. Third, youth sport programs are critical for the learning of motor skills; these motor skills serve as a foundation for future national sport stars and recreational adult sport participants. When coachers develop activities for youth practices and when sport organizations design youth-sport programs, they must consider the implication of deliberate play and deliberate practice.

Research from Telama (2006) states that regular participation in deliberate play or deliberate practice activities during childhood and youth (ages nine to eighteen) increases the likelihood of participation in sports during adulthood by six times for both males and females. Côté (2002) defines deliberate play activities in sport as those designed to maximize enjoyment. These activities are regulated by flexible rules adapted from standardized sport rules and are set up by the children or by an involved adult. Children typically change rules to find a point where their game is similar to the actual sport but still allows for play at their level. For example, children may change soccer and basketball rules to suit their needs and environment (e.g. in the street. on a playing field or in someone's backyard). When involved in deliberate play activities, children are less concerned with the outcome of their outcome of their behavior. (whether they win or lose) than with the behavior. (having fun).

    On the other hand, Ericsson (1993) suggests that the most effective learning occurs through involvement in highly structured activities defined as deliberate practice. Deliberate practice activities require effort, produce no immediate rewards, and are motivated by the goal of improving performance rather than the goal of enjoyment. When individuals are involved in deliberate play, they experiment with different combinations of behaviors, but not necessarily in the most effective way to improve performance. In contrast, when individuals are involved in deliberate practice, they exhibit behavior. focused on improving performance by the most effective means available. For example, the backhand skills in tennis could be learned and improved over time by playing matches or by creating fun practice situations. However, players could more effectively improve their backhand performance by practicing drills that might be considered less enjoyable. Although drills are used in most effective means available practice might not be the most enjoyable, they might be the most relevant to improving performance.

    (Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS)

  1. (1) Besides the learning of motor skills, what are the other two important objectives of youth sport?
  2. (2) If children participate in deliberate play or deliberate practice activities, they are more likely to.
  3. (3) In deliberate play activities, what do children do to maximize enjoyment?
  4. (4) In contrast to deliberate play, deliberate practice is aimed at.
某跨国公司关闭其苏州工厂,将生产线向越南、柬埔寨等劳动力成本更低的国家转移,导致该厂与我国300多家代加工企业的合同被解除。这给我们的启示是( )
A . 经济全球化对我国的经济安全构成极大威胁 B . 发达资本主义国家主导跨国公司投资的方向 C . 企业应从代加工向自主创新、自创品牌转变 D . 对外开放战略应由“引进来”转向“走出去”
—May I come in?

              .

A . That's all right B . Yes, please C . I see
细胞的分化、衰老和凋亡是普遍存在的生命现象,下列有关叙述正确的是(    )
A . 人体各种组织细胞的衰老是同步进行的 B . 人的早期胚胎有尾,尾部细胞随着发育逐渐凋亡 C . 原癌基因突变促使细胞癌变,抑癌基因突变抑制细胞癌变 D . 皮肤上的“老年斑”是细胞凋亡的产物
在下列横线上填上合适的单位或数字:①2012年6月4日,在国际田联钻石联赛尤金钻的男子110米跨栏比赛中,刘翔跑出世界纪录12.87;②小张同学的身高是1.65;③如图中铅笔的长度是 cm.

用四舍五入法0.00247精确到万分位是.
问题:探究函数 的图象与性质.

小强根据学习函数的经验,对函数 的图象与性质进行了研究,下面是其研究过程,请补充完整.

  1. (1) 自变量 的取值范围是全体实数, 的几组对应值列表如下:

    -4

    -3

    -2

    -1

    0

    1

    2

    3

    4

    5

    6

    5

    4

    2

    1

    2

    3

    5

    其中, .

  2. (2) 在如图所示的平面直角坐标系中,描出以上表中各对对应值为坐标的点,并根据描出的点,画出该函数的图象;

    图片_x0020_100020

  3. (3) 观察图象,写出该函数的两条性质.
如图是质谱仪的工作原理示意图,电荷量相同的带电粒子被加速电场加速后,进入速度选择器。速度选择器内相互正交的匀强磁场和匀强电场的强度分别为B和E.平加速电场板S上有可让粒子通过的狭缝P和记录粒子位置的胶片A1A2 , 平板S速度选择器下方有强度为B0的匀强磁场。下列表述正确的是(  )

A . 质谱仪是给同位素加速的工具 B . 速度选择器中的磁场方向垂直纸面向里 C . 能通过狭缝P的带电粒子的速率等于 D . 粒子打在胶片上的位置越靠近狭缝P,粒子的质量越小
使用显微镜时,要把视野中的物像“P”从图甲所示状态转化为图乙所示状态,其正确的操作步骤是(     )

A . 先将玻片标本往右上方移动;再转动转换器,把低倍物镜换成高倍物镜 B . 先将玻片标本往右上方移动;再转动转换器,把高倍物镜换成低倍物镜 C . 先将玻片标本往左下方移动;再转动转换器,把低倍物镜换成高倍物镜 D . 先将玻片标本往左下方移动;再转动转换器,把高倍物镜换成低倍物镜
相邻两个长度单位之间的进率都是10。(     )
Kate is only a ______________ girl, but she can play the piano well.
A . 6-years-old B . 6-year-olds C . 6-years-olds D . 6-year-old
如图所示装饰品采用了磨光和钻孔技术,它出土于(   )

A . 元谋人遗址 B . 北京人遗址 C . 山顶洞人遗址 D . 河姆渡人遗址
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