依法经有关行政部门认定为不合格商品的，消费者要求退货的，经营者应当负责退货。

任务型阅读。

    There are many things you can do to improve your memory. Among them are different memorizing methods

as well as taking special care of your health.

    It is important that you regularly stimulate (刺激) your brain to make your memory more efficient. You can

do this by doing activities that you don't normally do and by changing your daily habits. Learning a new skill

helps your brain to develop. When trying to memorize something, you should not allow other thoughts to entre

your mind because this will reduce your chances of making right memories.

    An excellent way to help memory is to connect information with pictures. It is called memonics (记忆术).

Try to see the pictures in your mind. Taking notes, being organized and keeping a diary will also be useful ways. 

    Healthy food and plenty of vitamins are good for your memory to work properly. Drinking a lot of water also

helps to keep your memory. You must allow your brain to have enough sleep and a good rest. When you are

asleep, your brain stores memory. Not enough sleep can cause problems with the storing information and being

tired will stop you from being able to concentrate(集中) well. Caffeine in tea and coffee is very good at

preventing sleepiness and helping concentrate well, but they can also cause problems with memory.

    In order to concentrate well, you must be relaxed. Generally keeping fit and regular health checks are both

important as well-not just for improving your memory.

根据上面短文内容填空。

1. Different memorizing methods and _____________ can improve your memory.

2. To make your memory more efficient, you ______________.

3. You should not allow other thoughts to entre your mind because you will ____________ to memorize things

   correctly.

4. ____________, plenty vitamins, drinking a lot of water, ___________ and a good rest are good for your

   memory to work properly, too

5. The good thing about caffeine in tea and coffee is that caffeine can _____________.

"飞鸽"文字是中国甲公司使用于油漆、涂料等商品上的商标。该商标在中国和其他许多国家进行了商标注册，并在世界同行业中具有很高的知名度。该公司还在中国设有销售部。中国乙公司在其生产的室内装修板材上突出使用"飞鸽板材"字样。甲公司认为此种行为侵犯了其商标专用权。对此事的正确看法是()。

A．油漆、涂料和装修板材并非同类产品，不存在侵权问题

B．乙公司使用"飞鸽板材"字样属于对商品名称的正常使用，不构成商标侵权

C．甲公司不是中国法人，不适用商标法给予保护

D．"飞鸽"是驰名商标，应给予特殊的保护，乙公司的行为已构成商标侵权

一般资料：马某，男性，16岁，学生表现出的问题：母子二人一起来访，孩子已经16岁了，今年上初三。孩子每说一句话之前，就得看看母亲的眼色，获得母亲的首肯，才敢讲话。孩子的讲话，也每每被母亲打断，加以解释、更正、澄清。孩子的行为举止，很像一个幼儿园的学龄前儿童，不时地，还与妈妈撒撒娇，与一个16岁的男孩子很不相称。上初中以后，求助者注意力不集中，学习成绩直线下降，特别害怕与同学相处、害怕压力、害怕考试，于是焦虑、紧张不安，并伴有失眠、头痛、全身酸痛等症状，孩子只好中途退学。既往生活史与当前生活情景：求助者从小性格内向，母亲很宠爱他，对孩子的一切事务都要亲自打理。可是，上了初中以后，孩子学习成绩直线下降，特别害怕与同学相处、害怕压力、害怕考试。尽管母亲用尽了所有办法，但全都无济于事。没办法，孩子只好中途退学。退学后，想了好多办法，什么读技校、上中专，自学成才呀，都试过了。每个计划在最初进行的时候，孩子都是踌躇满志的，可一旦真的进行下去，孩子就虎头蛇尾，坚持不下去。母亲还说："孩子为自己的前途，整天急得就像热锅上的蚂蚁，吃不好，也睡不着，想来想去，也拿不出个主意。实在想不出来了，就来问我，我说了一大堆，最后又被他一一否定了。这时候，他就会气急败坏地发火、摔东西、踢桌子，有时侯，还使劲拧我的胳膊。您看看，我这些红印全是他昨天拧的。现在我不明白了，我付出了这么多，为什么会是这样的结果？"根据案例，请回答以下问题：

本案例的初步诊断是什么？诊断的依据是什么？

下列说法不正确的是（　　）

A．需要加热的反应不一定是吸热反应

B．反应物的总能量高于生成物的总能量，发生放热反应

C．氯分子（Cl-Cl）变成2个Cl原子时会放出能量

D．生石灰投入水中的反应是放热反应

关于乳磨牙髓腔形态说法正确的是

A．乳磨牙通常有3个根管

B．下颌乳磨牙有时出现4个根管

C．上颌乳磨牙根管分为近中颊、舌侧根管和远中根管

D．下颌乳磨牙根管分为颊侧近、远中根管和舌侧根管

E．乳磨牙髓室颊舌径大于近远中径