我们把规定了（ ），（ ）和（ ）的直线叫做数轴．

下列说法正确的是（　　）

A．人体缺乏维生素A会引起坏血病

B．棉花、羊毛属于天然有机高分子材料

C．食用的水产品可用甲醛水溶液浸泡、保鲜

D．香烟烟气中的一氧化碳是一种极易与血液中的血红蛋白结合的有毒气体

根据短文判断下列句子的正确(T)与错误(F)。

     Being safe at school and in your everyday life needs knowledge. If you remember the following information, your life will be much safer.

     ●Always notice the environment around you. You shouldn't walk alone outside. Make sure where the public

phones are. If anything dangerous happens, you can find them quickly.

     ●Don't use earphones (耳机) when running in the schoolyard or on the street. You will keep yourself from

the outside world and can be easily surprised.

     ●School bags should be carried towards the front of your body instead of putting them on your back. When buses are crowded, it is easy enough for thieves to steal the things in your bags on your back.

     ●If you are followed by a stranger, cross the street and go in the other direction (方向), let the stranger

know that you know he or she is there. Next, go and get help from others if it is necessary. Don't go home

directly. You are safer on the street than you are in your home or in a lift.

     ●If you have to take a bus to a place far away, try to get to the stop a few minutes before the buses leave.

This prevents a stranger from studying you. On buses, don't sit alone, sit behind the driver or with you friends. Don't sleep.

     ●Don't play with matches (火柴) or candles, because it may cause fire. If your house catches fire and you have to escape through smoke, move on your hands and knees with your head 30 to 60 centimetres (厘米)

above the floor. Please remember there is cleaner, cooler air near the floor during the fire.

( )1. If you find a stranger following you, go home right away.

( )2. You'd better sit after the driver when you are alone to take a bus.

( )3. It's good for you to use earphones when you are running outside. 

( )4. You shouldn't sleep all the way although it's a long bus trip.

( )5. During the fire, the cleaner and cooler air is far from the floor.

( )6. When you escape from the house on fire, you should move on your

          hands and knees with your head 300 to 600 centimetres above the floor.

保险监管公示方式是一种比较宽松的监督管理形式，国家只是将保险经纪机构的经营状况、服务质量和其他有关事项予以公布，而对其经营不加任何直接监管。对于公示方式实施条件下列选项描述错误的是（）。

A.经济高度发展，拥有公平竞争的市场环境

B.社会各界具有较强的保险意识和较丰富的保险知识

C.保险经纪机构自身具有一定的自律能力和良好的商业道德

D.我国目前的状况已经达到这些条件

2010年上海世博会采用高效彩色太阳能电池板、锂离子电池等技术，真正达到碳的“零排放”．太阳能属于         能源（选填“可再生”或“不可再生”）．世博会上，以警用电动车为参照物，车上的锂离子电池是        的，警用电动车和地面指挥中心无线通信时用      （选填“超声波”或“电磁波”）进行联络．

体现医师克已美德的做法是（）。

A.风险大的治疗尽量推给别人

B.点名手术无论大小能做多少就做多少

C.只要是对患者有利的要求有求必应

D.只要是患者的要求有求必应

E.对患者有利而又无损自我利益的才去做