下列药物混合后，常出现低共熔现象的是（） A.牛黄与熟地 B.石膏与芒硝 C

骨软骨瘤多发生于青少年，多见于长骨干骺端。()

阅读理解。

     In our old neighborhood, neighbors chatted over fences. Newcomers were welcomed with chocolate

and bread. It had been easy to find friends there. Our new community was different. It seemed that family

roots grew deep, deep as the Mississippi River that flowed past the tiny river town.

    We'd moved to decrease my husband's distance to work. Only thirty miles.

    After living there for six months, I was ready to move back home. I was lonely without a friend. My

three boys were lonely. My husband, Lonny, seemed okay, but he spent his days at work.

     Lonny noticed my sinking disposition.

     "Shawnelle, you look unapproachable," he said. He and I were sitting in lawn chairs. Samuel, our

three-year-old son sat in his own little chair.

     "What do you mean?"  "Body language. You placed our chairs fifteen yards away from everyone

else."

     "It doesn't matter. I'm not going to have friends here." Just then Samuel looked up. "Mom's right,

Dad. And we just want to go home."

     That's when I knew that I needed an adjustment. I didn't want my boys to learn that the way to work

through a tough time was to use a wounded and bitter attitude.

     Over the next few months I smiled when I didn't feel like it. We signed up for reading programs at the

library and often visited parks and the bike path along the river.

     One afternoon Samuel and I climbed up the stairs to the library activity room. A woman who I hadn't

seen before sat at a long table with a tiny boy.

     "Hi," she said. "I'm Tammy. Do you need a seat? There's one right here."

      I sat down next to Tammy. Soon class was over, and we still had a lot to say. "Why don't you come

over later?" Tammy asked. "I live on a farm. There's plenty of room for the kids to run." We went. And

since that day, we've been back a million times.

      When I look back, I'm grateful for that tough time. I learned to persevere. I'm glad I didn't give up.

      And as for my boys, they learned a lesson too. "Keep moving forward," is what I tell them. "Your

heart will follow."

1. Why did the writer move to a new neighborhood?

A. To find a part-time job in the library.    

B. To make new friends with the local people.

C. To enjoy the beauty of the Mississippi River.

D. To make her husband go to work conveniently.

2. Shawnelle decided to keep going when ________.

A. Tammy encouraged her to join conversations

B. Samuel expressed his wish to go back home

C. Lonny pointed out the mistakes of her body language

D. Tammy invited her to go to her farm

3. Shawnelle mentioned her friendship with Tammy to prove_________

A. women seemed to have endless words to say

B. Tammy was rich to have room for kids

C. her family had finally fitted in the new place

D. Tammy's farm was suitable for kids to play on

4. What lesson did Shawnelle teach her kids? 

A. Have a dream in difficult times.          

B. Never break up with old friends.

C. Be careful in making friends.            

D. Keep up in a tough time.

5. What does the underlined word disposition in the fourth paragraph probably mean?

A. mood          

B. sorrow        

C. depression        

D. livelines

压力容器的容积

出租车司机甲送孕妇乙去医院，途中乙临产，情形危急。为争取时间，甲将车开至非机动车道掉头，被交警拦截并被告知罚款。经甲解释，交警对甲未予处罚且为其开警车引道，将乙及时送至医院。对此事件，下列哪一项表述是正确的？

A.在此交通违章的处理中，交警主要使用了形式逻辑的推理方法

B.警察对违章与否的解释属于“行政解释”

C.在此事件的认定中，交警进行了法的价值判断

D.此事件所反映出的价值之间没有冲突

某均质土坝长1.2km，高20m，坝顶宽8m，坝底宽75m，要求压实度不小于0.95，天然料场中土料含水量为21%，比重为2.70，重度为18kN／m3，最大干密度为16.8kN／m3，最优含水量为20%，填筑该土坝需天然土料（）。

A.9.9×105m3

B.10.7×105m3

C.11.5×105m3

D.12.6×105m3