北京故宫占地面积约为720 000m2，用科学记数法表示为( )m2．

Oh, boy! Time for a game now． oldest brother is the seeker so k have to hide extra good because he’s smart and will find me quickly．But where? Behind the garage won’t work. The barn is too easy. Wait, I know. The door leading under the porch is perfect. No one would look for me under there.

It smells unpleasant under this porch． Wish I had picked another place to hide． Smelly cats! Too late now, I can hear brother seeking everyone out. I’ll just sit here quiet as a mouse. Hah hah hah! I can hear you out by the barn! You’ll never find me over there!

It’s been a while and he hasn’t found me yet. What’s that I hear? Now all my brothers are looking for me. They’ve all been caught, but not me. They’ll never trick me into coming out to catch me. Wait, is that Dad I hear calling my name? Oh no, now I hear someone going to call Grandpa to help look for me. I’m not coming out now because I’m in really big trouble.

What to do? If I come out and say I heard them calling me, I’ll be in big trouble. Think, think! How do I get out of trouble? I know what to do! I’ll tell them I fell asleep while waiting. Is that Grandpa’s voice? Heh heh heh! Now’s my chance. I’ll crawl out slowly and rub my eyes. Now that I see Grandpa go towards me quickly, I say. “I feel asleep.”

“Oh! You had us all worried!” says Grandpa. “You little devil, I’m just glad you’re all right, but next time try not to fall asleep and scare us like that, okay?” says Dad. Whew! I pulled it off (成功). Now to keep my mouth shut. And I did, for over 42 years. Once in a while, a kid pulls the wool over people’s eyes. So that’s one of my little secrets I’ve never revealed before. Don’t tell anyone now!

小题1:The place where the boy was hiding smelt terrible because it         .

A．was too wet there

B．was used as a barn

C．was dirtied by animals

D．was just under the garage小题2:Which of the following correctly shows the boy’s emotional changes when he was under the porch?

A．Happy – excited – nervous.

B．Regretted – happy – anxious.

C．Excited – nervous – disappointed.

D．Happy – nervous – regretted.小题3:By saying “a kid pulls the wool over people’s eyes”, what does the writer mean?

A．Children can win others’ trust more easily than adults.

B．Children can tell a lie that others believe to be true.

C．Children can be easily fooled by adults.

D．Children are good at telling lies.小题4:The story is most probably written by          .

A．a teenager

B．a naughty boy child

C．a young adult

D．a middle – aged man

Why is（）fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the（）nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes （）, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The（）, like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures. Yet the program（）, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

Yet the program（）, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself.

A．construct

B．code

C．size

D．scale

数控机床的加工精度主要由（）的精度来决定。

润滑脂是按照（）的大小来编号的。

A、滴点

B、针入度

C、粘度

D、100℃运动粘度

归档工程文件的立卷过程中，案卷一般不超过（）。

A.40mm

B.50mm

C.30mm

D.10mm