把X溶液逐滴滴入Y溶液中,与把Y溶液逐滴滴入X溶液中,产生的现象不同的是[ ]

题型:选择题

问题:

把X溶液逐滴滴入Y溶液中,与把Y溶液逐滴滴入X溶液中,产生的现象不同的是[ ]

   X   Y

A.BaCl2  H2SO4

B.NaAlO2  HCl

C.NaHCO3 HCl

D.MgCl2 NaOH

考点:偏铝酸盐碳酸氢钠氢氧化钠镁的单质及其化合物(浓)硫酸
题型:选择题

Mr. Brown’s horse was stolen at night. All of his friends were very sorry about it and came to see him together. After they had been told about it, one of them said, “Why did not you lock the door of your stable (马房)that night? I think it is your fault.”

“You aren’t deaf, are you?” the second man said, “Didn’t you hear anything at that moment? The thief must have driven the beast out of the gate, and couldn’t have carried it on his back.”

“I agree with them!” Blamed the third, “How careless you are! Every evening before I go to bed, I lock my stable first and hide the key in my box. Why didn’t you do so?”

The more they said, the more excited they became. At last Mr. Brown couldn’t bear it any more and said, “I am glad that you have come to see me. But none of you would help me either look for my horse or catch the thief. Do you think that it’s all my fault? Why don’t you blame the thief?

小题1: The first man thought it’s Mr. Brown’s fault because _______.

A.let the door open

B.locked the door

C.had the door unlocked

D.had the horse locked up小题2: The second man thought Mr. Brown _________________.

  1. was a deaf                        
B. was very careful

C. must hear something when the thief stole the horse     

D. couldn’t hear anything at that time

小题3: The third man thought ________________.

A.the horse must be driven out

B.Mr. Brown did hide his key in his box

C.Mr. Brown wasn’t blamed by the third

D.Mr. Brown wasn’t careful.小题4: The more his friends said the more Mr. Brown ______________.

A. became excited    B got angry    C could bear       D blamed them

小题5:____________ should be blamed.

A. Mr. Brown      B his friends       C The thief      D All of them

题型:选择题

关于科学发现室的说法中,错误的是()

A.科学发现室的空间较大,材料丰富,儿童可以有充分的选择余地

B.科学发现室能保证每个儿童都有操作的机会

C.科学发现室的材料是按年龄阶段加以区分的,适于儿童在自己水平上进行探索

D.科学发现室便于形成学科学的气氛

题型:选择题

数据压缩编码方法可以分为无损压缩和有损压缩,其中(1)属于无损压缩。无损压缩编码的特点是(2)。 空白(2)处应选择()

A.无失真恢复数据、压缩比低

B.无失真恢复数据、压缩比高

C.有失真恢复数据、压缩比低

D.有失真恢复数据、压缩比高

题型:选择题

()is a major port of South Afric

A. Basra

B. Good Hope

C. Darwin

D. Nagoya

题型:选择题

理财产品指农业银行发行的债券及货币市场工具类、信托类、结构性、代客境外理财类及其他产品。包括()

A.本利丰”人民币理财产品

B.汇利丰”本外币结构性存款

C.境外宝”代客境外理财产品

D.基金宝”以及其它各类个人理财产品

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