计算:(1)cos60°-tan45°+sin30°(2)|-12|-20120

题型:解答题

问题:

计算:
(1)cos60°-tan45°+sin30°
(2)|-
1
2
|-20120-sin30°
考点:实数的运算
题型:解答题

古人:“焚薮而田,岂不获利,而明年无兽”,这句话说明了( )

A.为了保护庄稼不受破坏,不得不用焚烧的方式驱赶动物

B.农业生产必须遵循因地制宜原则,才能获得丰产

C.破坏环境、资源的多样性,农业生产将难以可持续发展

D.采用刀耕火种的生产方式,是人类文明的进步

题型:解答题
词语填空 10%

make  health   I   while  open   well   from   surprise   fight   if   

 
 


Dear Ronny,
  Years ago you came to me for help. You said, "Grandpa, how could you do so   小题1:  in your life? You're still active to your life, but I'm already tired of   小题2: for my life. How can I get the same thing that you've got?"
  I didn't know what to say to you. But when I know there are few days left for me, I tell   小题3:  that I should give you an answer. So here is what I believe.
First, you should know that life is filled(充满) with   小题4: , and many of them are good ones. If you don't keep your eyes   小题5: , you'll miss a number of good surprises in your life.  
  When you meet challenges, don’t run away, just welcome them. They'll make you stronger,   小题6:  and cleverer than you were before. When you do something wrong, you should be thankful for the things it gave you. And then, you should use this lesson to help you   小题7:  your dream come true. It's also important to decide what you want. Then keep your dream , work hard for it, and be ready to receive it. It will come true more quickly.
  And always follow the rules, even the little ones. When you follow the rules, life will work well.   小题8:  you think you can live without the rules, you're only fooling(愚弄) yourself.
  There will be more chances   小题9:  you are growing up. So you have to be brave enough to move from a known place to an unknown place. Life isn't just like climbing one mountain. It is also a part of your life to move   小题10:  one top to the next. If you rest for a too long time, you may fail at last. Leave the past in the past. Climb the next mountain and enjoy the fight in your life.
  The person that can win is the one who wants to win.
Love always,
  Grandpa
题型:解答题
下面说法正确的是(  )
A.0>负数>正数B.正数>0>负数
C.负数>0>正数
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通常网页的首页被定义为()。

A.index.htm

B.首页.htm

C.shouye.htm

D.都不对

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10BASE-5采用的是()

A、粗同轴电缆,星形拓扑结构

B、粗同轴电缆,总线拓扑结构

C、细同轴电缆,星形拓扑结构

D、细同轴电缆,总线拓扑结构

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