题目列表(包括答案和解析)
7. –Maps are very useful ____ people who often travel, aren’t they? -____.
A. for; Yes, they are B. for; No, they aren’t C. to; Yes, they are
6. –Do you know ____? -In Harbin.
A. where the Sun Island is B. where is the Sun Island C. where the Sun Island be
5. –I hear that compass was first ____ by Chinese long before. –You are right.
A. useful B. used C. use
4. –Is it easy to find the way ____ short distances? -Yes, it is.
A. of B. to C. over
3. –I don’t know ____ to get there? -Don’t worry, I will give you some ____.
A. how, direction B. when, method C. how, directions
2. -____ is it from your home? -1,000 meters.
A. How long B. How far C. How often
1. -____ did you ____ to find the way? -A compass and a map.
A. What, use B. What, used C. Which, useful
26.小明将一张矩形纸片沿对角线剪开,得到两张全等直角三角形纸片(如图2),量得他们的斜边长为10cm,较小锐角为30°,再将这两张三角纸片摆成如图3的形状,使点B、F、D在同一条直线上,F为公共直角顶点。然后小明又将图(3)中的△ABF沿直线AF翻折到图(4)的位置,点B落在FD边上的B1点,AB1交DE于点H。
请你说明:(1)AH=DH.;(2)点H在∠AFD的角平分线上。
25.如图,在△ABC中, D、E分别是AC、AB上的点, BD与CE交于点O. 给出下列三个条件:①∠EBO=∠DCO;②∠BEO=∠CDO;③BE=CD.
(1)上述三个条件中, 哪两个条件可判定△ABC是等腰三角形(用序号写出所有情形);
(2)选择第⑴小题中的一种情形, 证明△ABC是等腰三角形.
24.如图,在中,是上一点,交于点,,,与有什么位置关系?证明你的结论.
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com