下列属于先天性行为的是（） A．蜘蛛结网 B．猴子骑车 _爱下问搜题

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问题选择题

下列属于先天性行为的是（　　）

A．蜘蛛结网

B．猴子骑车

C．谈虎色变

D．老马识途

答案

先天性行为是指动物生来就有的，由动物体内的遗传物质所决定的行为，称为先天性行为例如：蜜蜂采蜜，蚂蚁建巢，蜘蛛织网，鸟类迁徙等．先天性行为是动物的一种本能行为，

不会丧失．后天性行为是动物出生后通过学习得来的行为．动物建立后天行为的主要方式是条件反射．参与神经中枢是大脑皮层不是与生俱来的而是动物在成长过程中，通过生活经验和

“学习”逐渐建立起来的新的行为．猴子骑车、谈虎色变、老马识途，是通过学习得来的行为，属于后天性行为；蜘蛛结网，是生来就有的，不学就会的，由体内的遗传物质所决定的先天性行为．

故选A．

完形填空

Do you like travelling? Today, I’ll give you some about travelling. You should have a good night’s sleep you travel. If you don’t, you will feel tired he way. You should take some with you. It may be helpful when you feel sick. You should have a meal before travelling. If you eat anything, you’ll feel hungry. And the food on the train is much more .You should listen to the weather report earlier, so you can a good plan for your travel. You’d better take a(n) with you. It can keep off the sun and the rain. You should your right clothes when you prepare your luggage(行李). If you’re going from a hot place to a cold place, you have to some warm clothes. You should drink enough water. Don’t wait to be . You’d better take some water you can have a drink when you want to drink. You should write down all the travel : departure(出发) and arrival time, bus or train number, your parents’ names , address and phone number and so on. You should take a . You can take lots of photos when you see beautiful scenery. When you come back, you can show the pictures to your friends. Above all, yourself when you are travelling. But please look after yourself and your things carefully.

A．in order to

C．information

单项选择题 A1/A2型题

骨骼摄影距离最佳选择是（）

A.150cm

B.100cm

C.80cm

D.60cm

E.50cm