水疝的诊断要点是A．阴囊肿大，偏坠一侧 B．阴囊内触及光滑肿物 C．囊性肿物，无痛无

Some children are afraid to go to the dentist, but not me. I’m a boy of 8 and I have a funny dentist. His name is Dr. Smileyface. I don’t think that’s his real name, but that’s what he tells all the children who come to see him.

He has a cool waiting room. It has video games and a big toy box. Dr. Smileyface always wears funny hats. Sometimes he has his face painted. He asks funny questions like “Are you married yet?” and “Do you eat flowers to make your breath smell so sweet?” That makes me laugh. One time, he told me this joke, “What has lots of teeth but never goes to the dentist? A comb!” When I laughed, he pulled my tooth. It didn’t hurt at all! He also teaches me how to take care of my teeth in an interesting way. Before I leave, he always gives me a surprise. Last week he gave me a toy ship and I liked it very much.

小题1: How does the writer feel when he goes to the dentist?

A．Angry.

B．Afraid.

C．Sad.

D．Happy.小题2:What does Dr. Smileyface teach the writer to do?

A．How to laugh.

B．How to take care of his teeth.

C．To eat flowers.

D．To paint his face.小题3: What did Dr. Smileyface give the writer last week?

A．A toy ship.

B．A toy box.

C．A comb.

D．Flowers.

下图是“尾气催化转换器”将汽车尾气中的有毒气体转变为无毒气体的微观示意图。图中不同的圆球代表不同种原子。

（1）则下列说法中正确的是         

A．反应物是两种单质

B．有些原子的种类发生了变化

C．参加反应的两种分子的个数比为1∶1

（2）根据此图你还能得到哪些结论                                 

下面语言片断中空白处应填的词语是（　　 ）（写上序号即可）

　　科学发展观，第一_______是发展，_______是以人为本，基本_______是全面协调可持续，根本_______是统筹兼顾。

①方法　②核心　③要义　④要求

指数按其( )不同，分为综合指数和平均数指数。

A．所反映的现象范围

B．所编制的方法

C．所反映的现象性质

D．所采用的基期

消费者最本质的特点在于（）。

A.购买量较小

B.购买次数多

C.购买行为复杂

D.购买用于个人和家庭需要