问题 单项选择题

死锁与系统状态的关系是: (25)

A.死锁状态有可能是安全状态

B.安全状态有可能成为死锁状态

C.不安全状态就是死锁状态

D.死锁状态一定是不安全状态

答案

参考答案:D

解析: 死锁状态一定是不安全状态,不安全状态不一定就是死锁状态。

阅读理解

Many animals hide to stay alive. They hide in many ways. Some animals hide in leaves; some animals hide in snow. Usually their colors or shapes help protect them. It’s hard to see an Arctic bear in snow. Its white fur helps protect it. Chameleons(变色龙) can hide by changing colors. Their skin turns the same color as what is around them. Some chameleons can change colors in five minutes.

Many animals try to look bigger than they are to stay alive. Some animals can make other animals think they are very big. If they look very big, animals that are looking for food will run away. Bears can walk on two legs. They look very, very scary. Some animals will run away from them.

Many animals try to stay around other animals. This helps them stay alive. Zebras stay close together so that they can help each other look out of danger. Seeing many stripes at once can also confuse animals that want to eat them. Some birds stay in a circle, each toward a different direction. In this way they can also help each other stay alive by looking around for animals that many want to eat one of them.

小题1:Animals have ways to stay alive. How many of them are mentioned in  the  passage ?

A.One

B.Two

C.Three

D.Five小题2:Why do animals hide ?

A.Because they like to play hide-and-seek.

B.Because they are shy.

C.Because they want to catch other.

D.Because they want to protect themselves.小题3:How do Chameleons hide ?

A.They change colors.

B.They change shapes.

C.They hide in snow.

D.They hide in leaves.小题4:How do zebras hide ?

A.Become good friends.

B.Talk to each other.

C.Help each other look out for danger.

D.Eat and play together小题5:Why do animals try to look bigger than they are ?

A.They want other animals to run away from them.

B.They want other animals to follow them.

C.They want other animals to see them.

D.They want other animals to like them.

阅读理解与欣赏

       桃树、杏树、梨树,你不让我,我不让你,都开满了花赶趟儿。红的像火,粉的像霞,白的像雪。花里带着甜味儿;闭了眼,树上仿佛已经满是桃儿、杏儿、梨儿。花下成千成百的蜜蜂嗡嗡地闹着,大小的蝴蝶飞来飞去。野花遍地是:杂样儿,有名字的,没名字的,散在草丛里,像眼睛,像星星,还眨呀眨的。

       ……

       雨是最寻常的,一下就是三两天。可别恼。看,像牛毛,像花针,像细丝,密密地斜织着,人家屋顶上全笼着一层薄烟。树叶儿却绿得发亮,小草儿也青得逼你的眼。傍晚时候,上灯了,一点点黄晕的光,烘托出一片安静而和平的夜。在乡下,小路上,石桥边,有撑起伞慢慢走着的人,地里还有工作的农民,披着蓑戴着笠。他们的房屋,稀稀疏疏的,在雨里静默着。

1.请用词语分别概括出文中春花和春雨的特点。

     春花:                                                                                                                      

     春雨:                                                                                                                     

2.在第一段里,画出运用拟人手法描写花的语句。并说说作者把花当成什么样的人来描写的?

    答:                                                                                                                                               

3.文章第一段中,由春花想到秋实,采用了                        的写法;第二段中描写春雨采用了                         顺序(角度),使描写井井有条。

4.写出第二段中你最喜欢的一句,并说说理由。

   答:                                                                                                                                                   

5.一般说来,人们对景物特征的观察可以从视觉、听觉、触觉、嗅觉等角度来进行。试指出下面的句子是从什么角度来观察、描写景物的。

(1)“吹面不寒杨柳风”,不错的,像母亲的手抚摸着你。 (                  )

(2)山尖全白了,给蓝天镶上一道银边。 (                  )

(3)走出门,就与含着露水和栀子花气息的好风撞个满怀。 (                  )

(4)震落了清晨满披着的露珠,伐木声丁丁地飘出幽谷。 (                   )