某施工单位由于自身原因延误了工期，于是将现浇方案改为预制装配来缩短施工过程的时间，该

一天，小影惊奇的发现妈妈蒸馒头时用的不是纯碱，而是小苏打，她好奇的问：“为什么不用纯碱而用小苏打？”妈妈说“面团没发酵，不能用纯碱”。通过查阅资料小影发现小苏打的化学式为NaHCO₃，是一种常用的膨松剂，加热可转化为纯碱。下列小影相关的推断不合理的是[ ]

A. 小苏打是膨松剂是因为能产生二氧化碳气体

B. 小苏打受热转化为纯碱是分解反应

C. 小苏打属于酸

D. 小苏打对人体无害

阅读理解。

     My daughter Kelsey was born with cerebral palsy (脑瘫). Because of her cerebral palsy, Kelsey has very

little use of the fingers on her left hand. When she was four, she wanted to learn to tie her shoes just as her

best friend had done. I didn't know what to do. If I couldn't tie a shoe single-handedly, how was I going to

teach her? However, after three and a half years of practice, Kelsey finally did it!

     When she was six, she wanted to take ballet lessons. I'm embarrassed to admit how much this frightened

me. I wasn't just afraid for her body, but for her feelings. I worried about the teasing she might get from the

rest of the dance class. But I didn't know how to tell Kelsey all of this, and she wouldn't let up, so I enrolled

her in a ballet school.

     Kelsey danced with abandon, completely unaffected by what she couldn't do. The joy of dancing was

enough. Every person who saw Kelsey dance came away with something special. She danced for four years.

When she quit, it was only to announce that she wanted to take horseback riding lessons instead.

     In fifth grade, Kelsey excitedly brought home a registration from for school basketball. Now this was

going to be a major challenge for her. She could run only slowly, she's short, and she still had the use of only

one hand. Warning bells were off inside my head again, but I had learned to ignore them. The excitement in

her eyes cancelled out all the drawbacks (缺陷), and we signed her up.

     After the first practice the coach said that he was afraid to let her play in a game. When he explained how

she might get hurt, I could see scenes lawsuits (官司) dancing in his head. But every child who plays sports

takes risks, I reasoned with him. After a few discussions and a little more encouragement, he decided to let

her play.

     For two years, Kelsey played harder than any girl in the league. And while she never made a basket during

a game, she brought other gifts that were more valuable to her teammates. In two years, I never once saw a

player treat her as anything other than treasures.

1. Kelsey stopped dancing because _____.

A. her mother didn't support her

B. she wanted to learn horse riding

C. her health condition wasn't suitable to dance

D. she couldn't bear the teasing from her classmates

2. The author says "I had learned to ignore them" (in Para. 4) because she _____.

A. was capable of dealing with. any incident

B. was able to take good care of her daughter

C. was confident in her daughter's health condition

D. was sure her daughter could overcome all the obstacles  

3. During the stay in the basketball league, Kelsey _____.

A. often sent her teammates gifts

B. was treated as a great inspiration to the league

C. was often looked down upon by her teammates

D. often made her coach worry about a possible lawsuit

4. What is the theme of the story?

A. Patience is bitter, but its fruit is sweet.

B. Activities provide happiness for the disabled.

C. Nothing is difficult if you set your mind to it.

D. Exercises are vital for the recovery of patients.

骨折固定的基本原则是（）

A.先止血后包扎再固定

B.先包扎后固定再搬运

C.先止血后固定再搬运

阅读以下的配置信息，解释(5)处的命令。

Switch#

Switch#cofing

Switch(cofing)#interface fo/1 //进入接口1配置模式

Switch(cofing-if)#switchport mode truck (5)

Switch(cofing-if)#switchport truck allowed vlan all //设置允许从该接口交换数据的vlan

Switch(cofing-if)#exit

Switch(cofing)#exit

Switch#

微型计算机的内存容量主要指（）的容量。

A.RAM

B.ROM

C.CMOS

D.Cache