【简答题】Недавно со мной случилась такая история. Я жил в гостинице «Москва». Утром я собрался на реку ловить рыбу. Я подошёл к лифту. Вдруг я услышал: «Здравствуйте! Меня зовут Гриша». Я увидел невысокого чел...
【简答题】如图,在⊙M中,弦AB所对的圆心角为120度,已知圆的半径为2cm,并建立如图所示的直角坐标系. (1)求圆心M的坐标; (2)求经过A,B,C三点的抛物线的解析式; (3)设点P是⊙M上的一个动点,当△PAB为Rt△PAB时,求点P的坐标.
【简答题】已知半径为2cm的半圆形铁皮,用它做成一个圆锥形容器的侧面 ⑴求这个圆锥的体积 ⑵经过它的侧面,用细绳把A、B连接起来, 则细绳至少要多长?(AB为圆锥底面圆的直径)
【简答题】已知一个圆的半径2(cm),求直径_________?面积__________?
【单选题】某中学开发了高效课堂模型,该课堂围绕教师编写的导学案进行。首先学生独立学习完成导学案上的知识填充及能力提升,然后由合作小组组织进行对学和群学,纠正知识误区与漏洞,再由教师适时点评总结。该课堂模型充分体现了教学过程中的基本规律()
【单选题】In the third paragraph, the author implies that the techniques of history and the techniques of social science are ______.
A.
quite different from each other
B.
equally useful in studying prehistoric cultures
C.
usually taught to students of archaeology
D.
both based on similar principles
【简答题】请在课堂讲授的立体POP结构中,选择每种类型(相框式、对扣、蛇腹、矩阵、瓶颈、悬挂等)各一款进行制作,了解本结构的基本呈现方式以及各种立体状态的表现手段。
【单选题】The monolithic microwave integrated circuits in Figure 1.3(b)is found to contain( ).
A.
active and passive devices and planar transmission lines
B.
active and passive devices
C.
active devices and plannar transmission lines
D.
passive devices and planar transmission lines
【单选题】According to the passage, which of the following statements is true?
A.
The imaging techniques not only measure nerve-cell activity but also the extra flow of blood that surges to the most active brain areas.
B.
The imaging techniques do not measure nerve-cell activity directly, but measure the flow of blood that surges to the most active brain areas.
C.
The imaging techniques measure the extra flow of blood that surges to the most active brain areas.
D.
The imaging techniques measure all the activities of the living brain.