某地区维生素A缺乏非常普遍，适宜作为强化维生素A载体的食物是A．面粉B．食盐C．酱油

阅读理解。

    "Dreams may be more important than sleep. We all need to dream." some scientists say.

     Dreams take up about one quarter of our sleeping time. People have several dreams each night. Dreams

are like short films. They are usually in colour. Some dreams are like old films. They come to us over and

over again. That may be because the dreamer is worrying about something. Dreaming may be a way of

trying to find an answer.

    Some people get new ideas about their work from dreams. They may have been thinking about their work

all day. These thoughts can be carried over into dreams.

    Sometimes we wake up with a good feeling from a dream. But of ten we can't remember the dream.

Dreams can disappear quickly from memory.

    Too much dreaming can be harmful. The more we sleep, the longer we dream. The mind is hard at work

when we dream. This is why we may have a long sleep but we feel tired when we wake up.

1. If Jack slept eight hours last night, there was about            dream in the night.[ ]

A. a two-hour

B. a one-hour

C. a one-quarter

D. an eight-hour

2. Why do some people often dream about their work? [ ]

A. Because they are happy in the daytime.

B. Because they are not interested in their work.

C. Because they may be this thinking about their work all day.

D. Because they have too much work to do.

3. The main idea of the passage is that           . [ ]

A. what a dream is

B. people like to sleep

C. dreams are like films

D. we always remember dreams

非味连药材的显微特征是（）

A.木栓层为数列细胞

B.皮层有石细胞

C.中柱鞘纤维束木化，或伴有石细胞

D.维管外韧型

E.髓部有石细胞

"禁放鞭炮"是许多城市的规定，然而2004年春节却遭遇了尴尬，许多市民大放特放，追求幸福、快乐是每个人的权利，但鞭炮燃放者也不能只顾自己的高兴而置噪声扰民、火灾隐患于不顾，置法律于不顾。这说明 [ ]

①公民既是权利的主体，又是义务的主体 ②权利与义务总是相对应而存在的 ③任何国家公民的权利与义务都是对立的 ④公民要坚持权利与义务相统一的原则

A．①③④

B．②③④

C．①②③

D．①②④

连墙件设置要求是（）。

A、应靠近主节点，偏离主节点距离不应大于600mm

B、应靠近主节点，偏离主节点距离不应大于300mm

C、应远离主节点，偏离主节点距离不应小于400mm

D、应远离主节点，偏离主节点距离不应小于600mm

播音风格的基调是？（）

A.豪爽

B.低沉

C.刚硬

D.含蓄