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【简答题】
Balzac() was a great French writer. But he was very poor before he became famous. He lived in a dirty, wet room and was often worried about food. All his friends were very poor and they could not help him. One night it was very cold. The wind blew and it was snowing heavily. Balzac went to bed early but couldn’t fall asleep. He didn’t get any food before he went to bed. He thought and thought, but he couldn’t have a good idea. At midnight he saw a man climb in through the broken window. The man began to steal something on his bookshelf. Balzac got up quietly and said, “Don’t waste time, my friend! I couldn’t find any money in the daytime. How can you find some in the dark?” 小题1:Balzac was a ________. A.worker B.writer C.doctor D.cleaner 小题2:Balzac lived in a dirty, wet room because ________. A.he was very poor B.he wanted to live there C.it was cold D.he was a famous man 小题3:Why didn’t he ask his friends for some food? Because __________. A.he had no friends B.his friends didn’t want to help him C.all his friends were very poor D.his friends didn’t like him 小题4:How was the weather that night? It was ___________ A.rainy B.cloudy C.sunny D.snowy 小题5:Could the thief find any money? __________ A.Yes, he could. B.No, he couldn’t. C.Maybe. D.I don’t know.
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【简答题】已知:如图,正方形纸片ABCD的边长是4,点M、N分别在两边AB和CD上(其中点N不与点C重合),沿直线MN折叠该纸片,点B恰好落在AD边上点E处. 小题1:(1)设AE=x,四边形AMND的面积 为 S,求 S关于x 的函数解析式,并指明该函数的定义域; 小题2:(2)当AM为何值时,四边形AMND的面积最大?最大值是多少? 小题3:(3)点M能是AB边上任意一点吗?请求出AM的取值范围.
【单选题】Tom burnt his hand when he _____ the dinner.
A.
cooked
B.
was cooking
C.
has been cooking
D.
had cooked
【单选题】On our arrival, we found Tom_____ at the desk with his hand ______ to the distance.
A.
seated, pointing
B.
sitting, pointing
C.
seating, pointed
D.
seated, pointed
【单选题】—Was Tom nervous before making a speech to the class? —Yes, he was. I noticed his hand_______ .
A.
shakes
B.
shaking
C.
shake
D.
shook
【简答题】如图,在△ABC中,AB=AC=1,∠A=45°,边长为1的正方形的一个顶点D在边AC上,与△ABC另两边分别交于点E、F,DE∥AB,将正方形平移,使点D保持在AC上(D不与A重合),设AF=x,正方形与△ABC重叠部分的面积为y。 (1)求y与x的函数关系式并写出自变量x的取值范围; (2)x为何值时y的值最大? (3)x在哪个范围取值时y的值随x的增大而减小?
【判断题】变压器套管法兰螺丝紧固时,不需要对称均匀紧固。 ( )
A.
正确
B.
错误
【简答题】如图,在△ABC中,AB=AC=1,∠A=45°,边长为1的正方形的一个顶点D在边AC上,与△ABC另两边分 别交于点E、F,DE ∥ AB,将正方形平移,使点D保持在AC上(D不与A重合),设AF=x,正方形与△ABC重叠部分的面积为y. (1)求y与x的函数关系式并写出自变量x的取值范围; (2)x为何值时y的值最大? (3)x在哪个范围取值时y的值随x的增大而减小?
【简答题】正方形ABCD的边长为4,BE ∥ AC交DC的延长线于E. (1)如图1,连接AE,求△AED的面积. (2)如图2,设P为BE上(异于B、E两点)的一动点,连接AP、CP,请判断四边形APCD的面积与正方形ABCD的面积有怎样的大小关系?并说明理由. (3)如图3,在点P的运动过程中,过P作PF⊥BC交AC于F,将正方形ABCD折叠,使点D与点F重合,其折线MN与PF的延长线交于点Q,以正方形...
【简答题】如图,在△ABC中,∠ACB=90°AC=BC=6cm,正方形DEFG的边长为2cm,其一边EF在BC所在的直线L上,开始时点F与点C重合,让正方形DEFG沿直线L向右以每秒 1cm的速度作匀速运动,最后点E与点B重合. (1)请直接写出该正方形运动6秒时与△ABC重叠部分面积的大小; (2)设运动时间为x(秒),运动过程中正方形DEFG与△ABC重叠部分的面积为y(cm 2 ). ①在该正方形运...
【简答题】如图,已知正方形ABCD与正方形EFGH的边长分别是 和 ,它们的中心O 1 ,O 2 都在直线l上,AD∥l,EG在直线l上,l与DC相交于点M,ME=7- ,当正方形EFGH沿直线l以每秒1个单位的速度向左平移时,正方形ABCD也绕O 1 以每秒45°顺时针方向开始旋转,在运动变化过程中,它们的形状和大小都不改变。 (1)在开始运动前,O 1 O 2 =______; (2)当两个正方形按照各...
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