下列各组离子，能在溶液中大量共存的是（） A．Cl-、K+、SO42- B．F

发布时间：2017-05-04 17:26 │ 来源：www.tikuol.com

题型：选择题

问题：

下列各组离子，能在溶液中大量共存的是（　　）

A．Cl^-、K⁺、SO₄^2-

B．Fe³⁺、Na⁺、OH^-

C．Ag⁺、Cl^-、NO₃^-

D．H⁺、Na⁺、CO₃^2-

考点：离子共存

题型：选择题

完形填空。

     A passenger (乘客) told an air hostess (空姐) that he needed a cup of water to take medicine when
the plane just took off. She told him that she would bring him the   1   soon.
     Twenty minutes   2 , when the passenger's ring for service sounded, the air hostess realized it at once.
She was kept so busy that she   3   to bring him the water. Therefore, the passenger was held up (延迟)
to take his medicine. She hurried over to him with a cup of water, but he   4   it.
     In the following hours on the flight,   5   time the air hostess passed the passenger, she would ask him
with a smile   6   he needed help or not. But the passenger never   7   her words.
     When he was going to get off the     8   ,   the passenger asked the air hostess to hand   him the
passengers' booklet (意见簿). She was very   9   . She knew that he would write down sharp words,
which might make her   10   the job.   11   with a smile she handed it to him.
     Off the plane, she   12      the booklet, and cracked a smile, for the passenger put it, "On the flight,
you asked me if I needed help for twelve times   13 . How can I refuse   14   twelve sincere smiles?"
     That's right! It was the twelve smiles of the air hostess that touched (感动) the passenger  15   and
of course she wouldn't lose her job!

( )1. A. milk
( )2. A. late
( )3. A. remembered
( )4. A. accepted
( )5. A. some
( )6. A. why
( )7. A. paid attention to
( )8. A. coach
( )9. A. happy
( )10.A. lose
( )11.A. And
( )12.A. opened
( )13.A. at all
( )14.A. her
( )15.A. peacefully

B. juice
B. later
B. forgot
B. took
B. either
B. when
B. thought of
B. bus
B. cheerful
B. loses
B. So
B. closed
B. in all
B. your
B. comfortably

C. coffee
C. ago
C. wanted
C. refused
C. another
C. whether
C. heard of
C. train
C. sad
C. losing
C. Then
C. destroyed
C. of all
C. their
C. deeply

D. wate r
D. after
D. learned
D. received
D. each
D. how
D. worried about
D. plane
D. excited
D. lost
D. But
D. hid
D. all over
D. our
D. slowly

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I know a place we can have a good rest.[ ]

A. where

B. when

C. which

D. that

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在一个环境改造项目中，以下哪项是一个增值变更的范例( )

A．由于政府修订了相关法规，需要修改项目设计
B．利用新近出现的、可以降低成本的技术
C．补充系统设计中遗漏的但应该有的特征
D．使用材料清单定义项目的整个范围

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某建设项目的开工报告批准的开工日期为2006年3月1日，由于某种原因，工程不能按期开工。根据《建筑法》的规定，如果该项目在( )前仍不能开工的，应当重新办理开工报告的审批手续。

A．2006年4月1日

B．2006年5月1日

C．2006年6月1日

D．2006年9月1日

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初为皮肤粉红色斑丘疹，继为椭圆形小水疱，晶莹明亮，分批出现，大小不等，称为（）。

A.白痦

B.风疹

C.隐疹

D.水痘

E.湿疹

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