玉琮的造型特征是（）

阅读理解

     I am a student. I like sports. I run every morn-ing and I swim twice a week. I like all kinds of ball

games. I like soccer, basketball, volleyball, tennis and ping-pong. I am good at ping-pong. I often play

ping-pong with my friend Liu Lei. We are on the school team. But he doesn't like other ball games. He

only likes to collect balls. He has a great collection. He has 6 soccer balls, 4 basketballs, 6 volleyballs

and many ping-pong balls. We like to watch sports on TV.

根据短文内容 ,判断下列句子正 (T)误 (F)

( )1. I run in the morning.                                

( )2. I go swimming once a week.                          

( )3. My friend and I like ping-pong.                      

( )4. Liu Lei likes all kinds of ball games.              

( )5. My friend and I have a great collection.            

( )6. Liu Lei has 5 soccer balls and 6 basketballs.        

( )7. We don't play sports, and we only watch sports on TV.

( )8. I am on the school ping-pong team.

皮样囊肿

A．发生于三个胚叶组织良性肿瘤
B．胚胎时期遗留在周围组织中的外胚叶组织所发展成的肿瘤
C．由造血组织所发生的恶性肿瘤
D．结缔组织发生的良性肿瘤
E．皮肤和黏膜上皮的良性肿瘤

计算机网络技术发展的一座里程碑是( )。

A．ARPANET

B．Ethernet

C．Internet

D．Birnet

树木的被迫休眠

某城镇2008年相关资料如下：年末常住人口3万人（年初常住人口2．9万人），其中男性人口1．55万人；当年出生人口200人，死亡人口50人；居民家庭户均总收入15万元，个人交纳的所得税及社会保障支出分别为3000元和2000元；家庭消费支出9万元，其中食品类支出3．5万元，居住类支出3．0万元。

居民家庭恩格尔系数为（）。

A.72.2%

B.38.9%

C.33.3%

D.43.3%