题干

想知道某种动物的一种行为,并分析刺激这种行为发生的主要因素,应该(   )

A:先用实验法,后用观察法

B:只用实验法即可

C:只用观察法即可

D:观察法和实验法有机结合

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答案(点此获取答案解析)

D

同类题2

阅读下面的选文,回答文后的问题。

我的父亲丰子恺

    我的父亲丰子恺,平日作画,喜欢从人民的日常生活中取材。记得抗战前在故乡时,他曾画过一个人牵着几只羊,每只羊的颈上都系着一根绳子。画好了挂在墙上,正好被帮我家挑水的青年农民看到了。他笑着说:“牵羊的时候,不论几只,只要用一根绳子系住带头的那一只,其余的都跟上来了。”父亲听了恍然大悟,同时想起了杜处士的故事。他重画了一张之后就把那故事讲给我们听。他说从前有个杜处士,珍藏着一幅“斗牛图”,是唐朝名画家戴嵩的作品。有一天他把画拿出来挂在门上晒,一个过路的牧童看到了,说“画错了!画错了!”杜处士听了心里想,一个乡下小儿竟敢批评起名画家来了,这还了得,便很不以为然地问错在哪里。那牧童说,两牛相斗,牛最用力的是两只角,尾巴总是紧紧地夹在两股中间的;画上的两只牛,尾巴都翘了起来,这不是画错了吗?父亲在结束故事时感慨地说:“看来要画好画,不能光凭想象,必须仔细观察事物,还应该多向各种各样的人请教。”父亲说到做到。有一次为了画一幅背纤图,他事先特地到河边去进行实地观察,发现来往货船走在最前面的纤夫大多是倒走的,经过了解,才知道倒走能够掌握航船的动向,可以随时通知其他的纤夫改变纤法。他便按观察所得画了这幅背纤图。

同类题5

阅读理解

    We all have found memories of taking a few lazy months off after the stress of A-levels. As we draw to the end of an academically and socially packed year, the idea of doing the same again is appealing.

    But after graduation, there will be few occasions when we can enjoy such extended holidays, free to do as we wish. So now that summer has arrived, let's take full advantage. It goes without saying that summer vacations are the perfect time to go traveling, especially if you avoid the pricey school holiday period.

    Tickets go up greatly when you turn 26, so make the most of cheaper rates while you're eligible. Finding a reliable company that won't cheat you is extremely important, as is discovering a program that appeals to your own interests. There are plenty of websites where you can see other people's recommendations.

    Of course for most of us, money is tight—but to avoid overspending you can combine employment and adventure. Hannah Warn, a psychology student at the University of Winchester, is spending her summer at Camp America, an increasingly popular venture where British students enjoy a good time on a summer camp.

    “Being thrown into something where I don't really know what to expect is exciting.” she says.“It gives me a chance to experience being away from home in a different way.”

    Those with a talent for languages might also consider working abroad as an au pair. The work may be challenging, but it's a chance to involve yourself in a new culture while your employer pays most of the bill.

    If you have an idea about the sort of career you'd like, getting work experience is wise. In many careers, graduating with only your degree to show for your three or four years just won't make it. Send applications off early and to as many places as possible. Make sure you take a well-earned break this summer.