我国法院受理的涉外离婚案件，离婚以及因离婚而引起的财产分割，适用我国法律，认定其婚姻

下列物质长期暴露在空气中不会变质的是（　　）

A．生石灰

B．食盐

C．烧碱

D．生铁

完形填空。
There was a boy who was sent by his parents to a boarding school (寄宿学校)．__1__ being sent away，this boy was the__2__student in   his class.He was at the top in every__3__ always with high marks.      But the boy changed after__4__home and attending the boarding school.His grades started __5__.He hated being in a__6__.He was lonely all the time.And there were especially dark times when he__7__committing suicide (自杀)．All of this was because he felt__8__and no one loved him.His parents started__9__about the boy.But they even did not know what was __10__with him.So his dad decided to travel to the boarding school and__11__him.      They sat on the bank of the lake near the school.The father started asking him some casual questions about his classes，teachers and__12__.After some time his dad said，“Do you know，son，why I am here today？”      The boy answered back，“To__13__my grades？”    “No，no，”his dad replied.“I am here to tell you that you are the most__14__person for me.I want to see you__15__.I don’t care about grades.I care about you.I care about your happiness.YOU ARE MY LIFE.”      These words__16__the boy’s eyes to be filled with tears.He__17__his dad.They didn’t say anything to each other for a long time.      Now the boy had__18__he wanted.He knew there was someone on this earth who cared for him deeply.He__19__the world to someone.And today this young man is in college at the top of his class and no one has ever seen him__20__！
( )1．A.After ( )2．A.hardest ( )3．A.exam ( )4．A.coming ( )5．A.rising ( )6．A.group ( )7．A.led to ( )8．A.worthless ( )9．A.caring ( )10．A.crazy ( )11．A.talk with ( )12．A.family ( )13．A.realize ( )14．A.outstanding (     )15．A.happy ( )16．A.caused ( )17．A.answered ( )18．A.nothing ( )19．A.showed ( )20．A.sad	B．Before B．naughtiest B．activity B．returning B．increasing B．term B．felt like B．careless B．turning B．true B．listen to B．friends B．analyze B．important B．excellent B．wanted B．ignored B．something B．meant B．angry	C．When C．brightest C．game C．leaving C．reducing C．company C．thought back C．concerned C．worrying C．possible C．tell to C．study C．check C．famous C．interested C．encouraged C．hated C．everything C．intended C．pleasant	D．While D．dullest D．class D．reaching D．dropping D．party D．looked for D．annoyed D．speaking D．wrong D．care about D．grades D．test D．familiar D．satisfied D．forced D．hugged D．anything D．expressed D．joyful

工业利用精炼镁渣(含有MgO、KCl、MgCl₂、BaCl₂、CaCl₂、FeCl₃等杂质)回收MgCl₂的工业流程如下:

已知:25 ℃时有关物质的溶度积如下:

物质	CaCO3	MgCO3	BaCO3	Mg(OH)2	Fe(OH)3
Ksp	4.96×10-9	6.82×10-6	5.1×10-9	5.61×10-12	2.64×10-38

回答下列问题:

(1)写出溶解时的离子方程式                               。

(2)溶解时温度不能太高,也不宜太低,要求控制在35 ℃左右,其理由是               。

(3)操作Ⅰ包含多个操作,分别为             ,过滤,洗涤,烘干。烘干时需要减压烘干,原因是                              。

(4)为减少Na₂CO₃的用量和提高产品质量,在中和工序(中和后溶液接近中性)结束前要检验溶液中是否存在       离子,选择检验该离子的原因是                        。

(5)母液的主要成分                                       。

哮是反复发作性的一个病种，以（）

A.呼吸气促困难为主要表现

B.咳嗽、咯血、潮热、盗汗、身体渐瘦为主要特征

C.喉中哮鸣有声为特征

D.咳吐浊唾涎沫为特征

E.心悸、唇甲发绀、胸腹胀满、浮肿

在疏松结缔组织中主要存在的胶原是（）

A、Ⅰ型胶原

B、Ⅱ型胶原

C、Ⅲ型胶原

D、Ⅳ型胶原