在MgCl2溶液中加入适量氨水，再加入NH4Cl，出现的现象是（ ） A．产生沉

---My name is Annabelle. Shall I spell it for you?

---___.

A．If you don’t mind

B．Not at all

C．Take it easy

D．Nice to meet you

小红同学很喜欢化学，遇到与化学有关的知识都不放过，常摘抄下来进行分析、思考．下面是她收集的一些内容，其中不符合科学道理的是（　　）

A．在液化气站工作的职工，严禁穿化纤类衣服

B．某工地的食堂因使用了工业盐（含亚硝酸钠），造成民工食物中毒

C．工人在疏通煤气管道时，因充入氮气，结果引起爆炸

D．某种麦片含有微量细小的还原铁粉，食用该麦片可防止缺铁性贫血症

男性，28岁。骶髂部被撞伤后疼痛1小时。查体：T36.5℃，P110次／分，R22次／分，BP85/60mmHg。神志清楚，表情淡漠，口唇苍白。头颅、胸、腹部检查无异常发现。指肛检查：肛门括约肌收缩有力。右侧腹股沟和骶髂关节处压痛，骨盆挤压分离试验阳性。双下肢感觉、运动、血运均正常。

目前应考虑的诊断是（提示：检查发现右侧耻骨上下支骨折伴骶髂关节完全性脱位，右侧骨盆向上移位2cm。导尿顺利，尿液清亮，尿常规正常。）（）。

A.骨盆骨折，Tile分型A型

B.骨盆骨折，Tile分型B型

C.骨盆骨折，Tile分型C型

D.失血性休克，重度

E.失血性休克，中度

F.失血性休克，轻度

I first went to hear a live rock concert when I was eight years old. My brother and his friends were all fans of a heavy metal group called Black Wednesday. When they discovered that Black Wednesday were going to perform at our local theatre, they all bought (21) for the performance. However, at the last minute, once of the friends couldn’t go, so my brother offered me the ticket. I was really excited!

I remember the buzz (嘈杂声) of excitement inside the theatre as we all found our seats. After a few minutes, the lights went down and everybody became quiet. I could barely make out the stage in the (22) . We waited. Then there was a roar from the crowd, like an explosion, as the first members of the band stepped onto the stage. My brother leaned over and shouted something in my ear, but I couldn’t hear what he was saying. The first song was already starting and the music was as (23) as a jet engine. I could (24) the drum beats and bass notes in my stomach.

I can’t recall any of the songs that the band played. I just (25) that I really enjoyed the show and didn’t want it to (26) . But in the end, after three encores (加演), the show finished. We left the (27) and walked unsteadily out onto the pavement. I felt a little dizzy, as if I had just woken from a long sleep. My ears were still (28) with the beat of the last song.

After the (29) , I became a Black Wednesday fan too for a few years before getting into other kinds of music. Once in a while, though, I listen to one of their songs and (30) I’m back at that first show.

30().

A. decide

B. regret

C. conclude

D. imagine

拉线坑的坑长为（）。

A、1.0m

B、1.2m

C、1.4m

D、1.6mm