下列物质的应用中，利用物理性质的是 A．干冰用作制冷剂 B．潜水时用氧气供给呼吸

资料分析：

你听说过捕蝇草吗?捕蝇草生长在美洲，它的茎很短，叶片的构造十分奇特。在靠近茎的部分，叶片呈绿色，可以进行光合作用；叶端变成了肉质的，像一个可以随意开合的贝壳，并且每半个叶片的边缘上还生长有10多根又长又硬的刚毛。平时，“贝壳”向外张开，叶缘蜜腺中散发出甜蜜的气味，同时发出紫外光。苍蝇对紫外光特别敏感，当它飞过去，一旦触动了刚毛， “贝壳”就在极短的时间里闭合，将猎物禁闭在“牢笼”里。当捕蝇草捕获到猎物以后，那个像贝壳似的捕猎器又变成了它的“胃”，能及时地分泌出消化液，将猎物慢慢地消化。几天后，当猎物被完全消化干净了，叶子便再次张开，等待下一只猎物的落网。

以上这段文字，表现出生物的哪些基本特征?（共5分）

Many people go to school for education. School education is very important and useful, but no one can learn everything from school. A teacher, no matter how much he knows, can't teach his student everything. His work is to show his students how to learn .He teaches them how to read and how to think. So much more is to be learned outside school by students themselves.

It’s always more important to know how to learn by oneself than to learn some facts or formulas(公式) by heart. It’s quite easy to learn some facts in history or a formula in maths, but it’s very difficult to use them. Edison and Einstein didn’t get everything from school, but they were all successful. They invented so many things. The reason for their success is that they knew how to study. They read many books outside school. They worked hard all their lives, wasting not a single moment. The most important thing is that they know how to use their brains（大脑）.

小题1:Students can’t learn everything in school because _____________.

A．the teacher doesn’t know much

B．the teacher can only teach them how to read and write

C．the teacher would not like to teach

D．there are still many things for the students to learn outside小题2:A teacher’s work is _________________

A．to teach all subjects

B．to teach everything

C．to teach the students how to read and think

D．to work hard小题3:To know how to____is much more important than facts or formulas by heart.

A．work out maths problems

B．remember all the facts

C．study science

D．study小题4:Why did the famous scientists become successful ? Because__________

A．they knew how to study

B．they remembered all the formulas

C．they didn’t get everything from school

D．they didn’t know how to use their brains小题5:Which is WRONG according  to the passage?

A．Outside school study is as important as school study

B．It’s more important to know how to learn than only remember some facts and formulas.

C．It’s very easy to use a formula in working out a maths problem.

D．It’s helpful to read more books outside school

流行性乙型脑炎的主要传播媒介是（）

A.白蛉

B.蜱

C.蚊虫

D.螨

E.蠛蠓

常见的发生铁磁谐振过电压可以是基波谐振和奇次谐波谐振。( )

在下列经济活动中，能够体现企业与投资者之间财务关系的是（）。

A.企业购买其他企业股票

B.其他企业投资购买本企业债券

C.企业向国家税务机关缴纳税款

D.企业向股东支付股利