简述福禄倍尔的“教学即生活”。

下列各项目中，属于我国税收法律关系权利主体的是()

A.各级税务机关

B.各级人民政府

C.海关

D.财政机关

一个九位数，最高位是5，百万位是8，个位是l，其余各位都是0，这个数写作______，四舍五入到亿位约是______．

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余项。

Autumn blues? Let the sunshine in falling leaves, withering flowers, cold winds, faint sunshine.   小题1:    Spirits can be low.

People who suffer from the “autumn blues” often are extremely exhausted, lack energy, need more sleep, feel increased appetite and gain weight.

“The exact cause of this condition, often called seasonal depression or seasonal affective disorder(SAD), is not known yet,” says Chen Jue, associate professor at Shanghai Mental Health Center. “But recent studies indicate that weather change is influential and strongly suggest that this condition is caused by changes in the availability of sunlight.”

One theory is that with the decreased exposure to sunlight, the biological clock that regulates mood, sleep and hormones is delayed, running more slowly in winter.    小题2:        Another theory is that brain chemicals that transmit information between nerves may be altered in individuals with SAD. It is believed that exposure to light can correct these imbalances.

“   小题3:   Remember, spring always lives in your heart,” Chen says.

Here are some tips to deal with autumn depression.

Go outdoors and get some sunlight. More around. Fresh air and exercise improve the respiratory system and blood circulation and regulate the nervous system. Thus exercise is calming and relieves one’s mood.

Relax at work. Stretch, breathe deeply. Take a tea break. Think of your next vacation.

小题4:   Chocolate and sugar raise the spirits.

Look at bright colors, such as red and orange. Color therapy improves mood.

Listen to your favorite music. You can dance to it, or just lie on a cozy couch, reading a novel.

   小题5:    Blooming plants are cheering.

Call friends or family when you feel lonely or depressed. Recall some happy memories.

A．Exposure to light may reset the biological clock.

B．Decorate your room and work space with flowers.

C．It is a sad season, but you can try to make it happy.

D．That is the way you can use to lighten yourself.E. Keep a chocolate bar in your pocket.

F. For many people late autumn can be a season of gloom and depression.

G. Autumn always gives us a beautiful scene.

无尿是指（）

A．肝硬化腹水 

B．急性胃穿孔致腹膜炎 

C．胰腺囊肿 

D．癌症晚期恶病质 

E．腹白线疝

"产品质量认证"包括（）

A、合格认证

B、安全认证

C、强制认证

D、体系认证