题海网，海量题库；找题库、找试卷、找答案就上题海网。

某人右下肢因受外伤造成运动障碍，但有感觉．该病人受损伤的部位可能是在反射弧的（    ）

①传入神经    ②传出神经    ③感受器    ④神经中枢    ⑤效应器

下列关于有机物的叙述正确的是(    )

下列关于我国省级行政区域单位说法正确的是(　　)

湿地的分布受气候、地形、水文和人类活动等多种因素的影响。读黄河流域湿地分布与干燥度的折线图(干燥度是年蒸发量与年降水量之比)。

完成下列各题。

小明的妈妈有4000欧元，能兑换元人民币。（按100欧元兑换802元人民币计算）

 

已知 的内角A，B，C所对的边分别为a，b，c，若 ，则 的形状为（    ）

更好的自己，是在为他人、为社会带来福祉的过程中实现的。下列能体现这一要求的有（     ）

①为了让身材匀称，小宁开始节食，导致身体虚弱

②小夏凡事都先考虑自己的利益，他认为这才对得起自己

③中学生小马把卖鲜花挣的钱捐给患白血病的同学，希望同学能尽快康复

④小珠在高考后第二天就上防汛一线。成为最年轻的“守堤人”

如右图所示伽利略温度计(烧瓶内有空气)，下列说法正确的是（    ）

任务型阅读

Do we have a movement signature?

As humans, we have several qualities that separate us from one another, such as our fingerprints.

According to a recent study, each person has a unique movement signature (鲜明特征). Depending on the person, these differences can be subtle or pronounced.

 For the study, scientists attached electrodes (电极) to muscles in the legs of volunteers. The volunteer were then asked to perform activities such as walking on walking machines and riding stationary bikes (健身车), which were adjusted according to each person's physical appearance in order to make sure everyone was judged using the same standards.

Scientists fed the information to a computer along with the volunteer's name. Next, the computer was fed information without the user's name and it could identity the person correctly 99% of the time. The outcomes of the study showed that each of us does have something unique about our general movements.

 Since this is just a pilot study, scientists will do more tests to see if the signature changes with age and weight changes. But with a deeper understanding of the science of movement, doctors could possibly develop more intricate prosthetics (复杂精细的假肢). Whether that's cool or frightening is up to you to decide.

A. How could this study be of use to scientists?

B. What do you think of the findings of the study?

C. Volunteers are expected to write a report on the activities.

D. Is it possible that we also have unique qualities in our movement.

E. Scientists could also program robots to copy humans' movements more exactly.

F. In this way, the computer could learn the unique movement quality of each person.

G. The study was conducted by inviting people to take part in a couple of physical activities.

某船在 处看到灯塔 在北偏西 方向，它向正北方向航行50海里到达 处，看到灯塔 在北偏西 方向，则此时船到灯塔 的距离为海里．

读“台湾岛年平均气温分布图”，完成下面小题。

如图，在四面体ABCD中，O、E分别是BD、BC的中点，CA=CB=CD=BD=2，AB=AD=

（Ⅰ）求证：AO⊥平面BCD；

（Ⅱ）求点E到平面ACD的距离．

阅读下列材料：

“109年（1840～1949年）沧桑巨变，换了人间。北京天安门，曾在1900年见证了西方列强的野蛮，在1919年见证了中国人民的觉醒；1949年的秋天，它终于迎来了一个崭新的共和国。为了这一天的到来，一代代中华儿女前赴后继，在这峥嵘百年中历经无数艰难坎坷。他们的业绩，将永远载入中华民族伟大复兴的史册。”

——《复兴之路》解说词

请回答：

二次函数y=（a-1）x²-x+a²-1 的图象经过原点，则a的值为.

 下列物质中，属于有机合成材料的是（　　）

设等边三角形 的边长为1，平面内一点 满足 ，向量 与 夹角的余弦值为（  ）

人体呼吸时，呼出气体与吸入气体相比，含量减少的是（   ）

根据课本，解释下面句子中划线词的意义。

①余强饮三大白而别。（《湖心亭看雪》）

②卧右膝，诎右臂支船。（《核舟记》）

③当余之从师也，负箧曳屣行深山巨谷中。（《送东阳马生序》）

④怀怒未发，休祲降于天。（《唐雎不辱使命》）

⑤蹴尔而与之，乞人不屑也。（《鱼我所欲也》）

如图，直线AB、CD相交于点O，OF⊥CO，∠AOF与∠BOD的度数之比为3：2，求∠AOC的度数．

—Who told you about the result of the exam?

—The teacher _________.