下列对派生类的表述中，错误的是( )。A．一个派生类可以作为另一个派生类的基类 B

发布时间：2017-12-09 09:31 │ 来源：www.tikuol.com

题型：单项选择题

问题：

下列对派生类的表述中，错误的是( )。

A．一个派生类可以作为另一个派生类的基类

B．派生类至少有一个基类

C．派生类的缺省继承方式是private

D．派生类只继承了基类的公有成员和保护成员

考点：计算机等级考试 C++二级C++笔试

题型：单项选择题

完形填空

     In the doorway of my home,  I looked closely at my 23yearold son,  Daniel.In a few hours he would
be flying to France to __1__ a different life.It was a transitional (过渡的) time in Daniel's life.I wanted
to __2__ him some words of significance.But nothing came from my lips,  and this was not the __3__
time I had let such moments pass.
     When Daniel was five,  I took him to the bus stop on his first day of kindergarten.He asked,  "What
is it going to be like,  Dad?Can I do it?" Then he walked __4__ the steps of the bus and disappeared
inside.The bus drove away and I said nothing.A decade later,  a similar __5__ played itself out.
     I drove him to college.As I started to leave,  I tried to think of something to say to give him __6__
and confidence as he started this new stage of life.Again,  words __7__ me.
     Now,  as I stood before him,  I thought of those __8__ opportunities.How many times have I let
such moments __9__?I don't find a quiet moment to tell him what he has __10__ to me.Or what he
might __11__ to face in the years ahead.Maybe I thought it was not necessary to say anything.
     What does it matter in the course of a lifetime if a father never tells a son what he really thinks of
him?__12__ as I stood before Daniel,  I knew that it did matter.My father and I loved each other.Yet
I always __13__ never hearing him put his __14__ into words.Now I could feel my palms sweat and
my throat tighten.Why is it so __15__ to tell a son something from the heart?
      My mouth turned dry,  and I knew I would be able to get out only a few words clearly."Daniel,  "I
said,  "if I could have picked,  I would have picked you." That's all I could say.He hugged me.For a
moment,  the world __16__,  and there were just Daniel and me.He was saying something,  but tears
misted my eyes,  and I couldn't understand what he was saying.All I was __17__ of was the stubble
(短须) on his chin as his face pressed __18__ mine.What I had said to Daniel was __19__.It was
nothing.And yet,  it was __20__.

( )1. A.experience
( )2. A.show
( )3. A.last
( )4. A.upward
( )5. A.sign
( )6. A.interest
( )7. A.failed
( )8. A.future
( )9. A.last
( )10. A.counted
( )11. A.think
( )12. A.But
( )13. A.wondered
( )14. A.views
( )15. A.important
( )16. A.disappeared
( )17. A.sensitive
( )18. A.by
( )19. A.clumsy
( )20. A.none

B. spend
B. give
B. first
B. into
B. scene
B. instruction
B. discouraged
B. embarrassing
B. pass
B. meant
B. want
B. And
B. regretted
B. actions
B. essential
B. changed
B. convinced
B. against
B. gentle
B. all

C. enjoy
C. make
C. very
C. down
C. scenery
C. courage
C. struck
C. obvious
C. fly
C. valued
C. expect
C. Instead
C. minded
C. feelings
C. hard
C. progressed
C. aware
C. on
C. absurd
C. anything

D. shape
D. instruct
D. next
D. up
D. sight
D. direction
D. troubled
D. lost
D. remain
D. cared
D. wish
D. So
D. tried
D. attitudes
D. complex
D. advanced
D. tired
D. with
D. moving
D. everything

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A、钠盐水溶液

B、钾盐水溶液

C、镁盐水溶液

D、钙盐水溶液

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A.急性胰腺炎

B.慢性胰腺炎

C.慢性胆囊炎

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海南岛一年可种植三季稻的主要原因是（）

A.土壤肥沃

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C.雨水充沛

D.地形平坦

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