恐惧症的特征性症状是（） A.焦虑 B.回避行为 C.恐惧 D.抑郁 E.人格解体

物质A--E都是由下表中的离子组成的，常温下各物质从1 mL稀释到1000 mL，pH的变化如甲图所示，其中A 与D反应得到E。请回答

(1)根据甲图中各物质的pH变化关系，写出下列物质的化学式：B__________，D___________。

(2)甲图中a>9的理由是____________________。

(3)另取浓度为c1的B溶液25 mL，向其中逐滴滴加 0.2 mol/L的D溶液，滴定过程中溶液pH的变化曲线如 乙图所示。

①q为____________；

②G点溶液呈中性，则加入D溶液的体积V_________ （填“>”“<”或“=”）12.5 mL；

③常温下B、C溶液的pH分别是a、b且a +b=13，则将B、C混合恰好完全反应时所消耗B、C溶液的体积比 V_B:V_C=_____________。

李军第一次拿工资，想给每个家人买一份礼物， 请根据对其家人的具体介绍， 为他们选择合适的礼物。，将相应的图片序号填入第71-74空格中，并完成第75小题。

小题1:Li Jun’s brother likes listening to music, he always listens to songs while reading books or on buses.

小题2:Li Jun’s father is a taxi driver , he is very busy in the day , but he loves sports very much . He often plays soccer when he is free.

小题3:Li Jun’s grandma likes exercising . She often walks in the park on sunny days. She hopes to be in good health.

小题4:Li Jun’s mother is a teacher , she is always busy with her work, so she has a sore back these days, she decides to swim in her free time.

小题5:How much will it take Li Jun to get these present for his family ?

A．Less than 700 yuan.

B．More than 1200yuan.

C．Less than 1200 yuan

D．1000yuan.

In their efforts to persuade us to buy that product,shopkeepers have made a close study of human

nature and have __________ all our little weaknesses. [ ]

A. divided  

B. arranged

C. classified  

D. separated

增值税一般纳税人取得2012年1月1日以后开具的增值税专用发票，应在开具之日起（）日内到税务机关办理认证申报抵扣进项税额

A.30

B.60

C.90

D.180

草坪的疏松作业主要有（）和（）两种。