根据《民航法》的规定，公共航空运输企业的营业收费项目，由( )确定。A．国务院价格

阅读理解。

     When you are about to do something brave, a cheerful wish of"Good luck!" from a friend can be helpful.

But if you think you need lots of luck, what else might you do?

     In the UK and US there are some strange traditions for bringing yourself a little more good luck. Some are

hundreds of years old and some are much newer.

     Have you heard the saying "When you wish upon a star"? If you are looking up at the sky on a clear night

and you see a sudden flash of light, it is probably a shooting star! Seeing one doesn't happen very often. The

saying goes that if you see one you have been very lucky, and so if you make a wish, it will come true.

     Maybe you have heard of the lucky rabbit's foot. Some people believe that rabbits are lucky animals, so

they carry a part of the rabbit, its foot, for good luck. There are all kinds of strange, unclear rules about

which of the rabbit's feet is the luckiest. It is said that this good luck tradition is the oldest one of all.

However, as the funny saying goes, "Depend on the rabbit's foot if you will, but remember it didn't work

for the rabbit!"

     People in Britain love trees. If it is autumn and leaves are falling from the trees, some people try to catch

the leaves as they fall because they think each leaf they catch will bring them a lucky month in the following

year-they will need to catch 12 falling leaves to have a whole of good luck!

1. ______ is mentioned in the oldest good luck tradition.

A. A rabbit's foot

B. A falling leaf

C. A cheerful wish from friends

D. A shooting star

2. From Paragraph 3, we know that ______.

A. shooting stars can often be seen

B. people can see a shooting star on a rainy night

C. your wish may come true if you see a shooting star

D. people believe that it's unlucky to see a shooting star

3. British people try to catch 12 falling leaves because ______.

A. the leaves fall in autumn

B. there are so many leaves to catch

C. the leaves can bring them a lucky month

D. they want to have a whole year of good luck

4. In Paragraph 5, the underlined word "them" refers to (指) ______.

A. trees

B. people

C. leaves

D. years

5. The passage is mainly about ______.

A. how to wish upon a star

B. things that bring good luck

C. British people love leaves

D. which of the rabbit's feet is the luckiest

如图所示电路中，R_L=6 Ω，电流表的量程为0 ～0.6A ，电压表的量程为0 ～3V ，电源电压为8V 。为了使两表都能安全使用，对变阻器连入电路的阻值有何要求？

水利基本建设项目按其对社会和国民经济发展的影响分为( )。

A．公益性项目

B．中央项目

C．经营性项目

D．准公益性项目

E．地方项目

空斗墙的水平灰缝厚度和竖向灰缝宽度通常为12mm。( )

非特殊区域食品废弃物粉碎后不大于（）筛眼的垃圾可在最近陆地3海里外排入海中。

A、25cm

B、25mm

C、2.5cm

D、2.5mm