一个民族的思维结构很大程度上容易受到（）的控制。A、语言文字结构B、文化结构C、文学

My mother was telling me about how she and her family got their first television when she was a teenager. Of course it was black and white. She said she only watch it at night. She doesn’t remember over watching it in the morning or afternoon. When I was young we had only about 3 or 4 different channels(频道). My bothers, my sisters and I would sometimes fight(打架) about which channel to watch. But we usually enjoyed the same shows. Now we can get hundreds of channels on TV. I can’t believe it! There are channels with old films, cooking, fishing and so on. It’s surprising! There is a channel for everything. I wonder how much my bothers, my sisters and I would fight if we had hundreds of channels when I was a child. Of course we had only one television set. These days I find families with 2 or 3 or more television sets in their homes. I guess it stops people from arguing(吵架) about which channel to choose from .

小题1:In those days, how many television sets did people have?

A．more than one

B．one

C．3 or 4

D．more than 4小题2:What kind of TV channels do we have now?

A．Channels with cooking

B．Channels with old films

C．Channels with fish

D．A, B&C小题3:Now how many channels can we get on TV?

A．3 or 4 different channels.

B．Only one channel.

C．Hundreds of channels.

D．Less than 10 channels.小题4:When my mum was a teenager, her brothers, sisters and she usually enjoyed______.

A．different channels

B．the same shows

C．different shows

D．all the shows小题5:Which of the following in NOT true?  

A．My mum’s brothers and sisters would fight about which channel to watch when she was a child.

B．These days, there is only one channel with old movies, cooking and fishing.

C．People have many channels to choose from now.

D．Family members will not fight for the television set.

某女，58岁，反复踝关节疼痛1年，患者疼痛呈间歇性，自行服用秋水仙碱后能较快缓解。查：右踝关节有红、肿、热、痛。其余关节无异常。查血尿酸625μmol／L，治疗对其不宜的是（）

A.限制总热量摄入

B.限制高嘌呤食物摄入

C.适当运动

D.少饮水

E.多休息

图中是在实验室进行氨气快速制备与性质实验的组合装置，部分固定装置未画出。

（1）在组装好装置后，若要检验A～E装置的气密性，其操作是首先___        _____，在E中装入水，然后微热A，观察到E中有气泡冒出，移开酒精灯或松开双手，E中导管有水柱形成，说明装置气密性良好。

（2）装置B中盛放的试剂是________。

（3）点燃C处酒精灯，关闭弹簧夹2，打开弹簧夹1，从分液漏斗放出浓氨水至浸没烧瓶中固体后关闭分液漏斗，稍候片刻，装置C中黑色固体逐渐变红，装置E中溶液里出现大量气泡，同时产生________(答现象)；从E中逸出液面的气体可以直接排入空气，请写出在C中发生反应的化学方程式：________________________。

（4）在关闭弹簧夹1后，打开弹簧夹2，残余气体进入F中，很快发现装置F中产生白烟，同时发现G中溶液迅速倒吸流入F中，写出产生白烟的化学方程式：____________________，迅速产生倒吸的原因是____________________________。

下述第二乳磨牙形态特点哪个不正确（）

A.第二乳磨牙的牙冠较小、色白

B.第二乳磨牙的牙冠颈部明显缩小，颈嵴较突

C.第二乳磨牙的牙冠由颈部向合方缩小

D.第二乳磨牙近中颊尖、远中尖大小不相等

E.第二乳磨牙的根干短、牙根向外张开

沥青中的矿物填充料有（）。

A.石灰石粉

B.滑石粉

C.石英粉

D.云母粉

E.石棉粉