如图是08春晚节目《逗趣》中的一个画面,“狗叫、鸟鸣及手影…”,其中蕴含很多物理

题型:选择题

问题:

如图是08春晚节目《逗趣》中的一个画面,“狗叫、鸟鸣及手影…”,其中蕴含很多物理知识,下列解释不正确的是(  )

A.手影说明光在同种均匀介质中沿直线传播

B.现场观众听到的声音是通过空气传播的

C.演员模仿的是动物叫声的音调

D.居民家中电视机收到该节目是通过电磁波传播的

考点:声音的传播声与信息光的直线传播的应用广播、电视
题型:选择题

工资集体协商时,一方在接到另一方提出的书面协商意向书后,应于( )内予以答复。

A.15日

B.20日

C.30日

D.60日

题型:选择题

阅读下面短文,掌握其大意,然后从21—40各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题纸上将该选项标号涂黑。

During the war,my husband was stationed at an army camp in a desert in California.I went to live there in order to be 21  him. I hated the place .I had never  22  been so unhappy . My husband was ordered out on a long-term duty,and I was left in a tiny shack(棚屋) alone. The heat was  23  -almost 125 0F even in the shade of a cactus(仙人掌)。 24  a soul to talk to . The wind blew non-stop ,and all the food I ate ,and the evry air I breathed,were  25   with sand , sand , sand !

I was so sorry for myself that I wrote to my parents. I told them I was  26   and coming back home.I said I couldn’t stand it one minute longer. I  27  be in prison! My father answered my  28  with just two lines-two lines that will always sing in my  29  - two lines that completely changed my life :

Two men looked out from prison bars

One saw the mud ,the other saw the stars

I read those two lines  30   I was ashamed of myself. I made up my mind I would find out what was good in my present  31  ; I would look for the stars

I made friends with the natives,and their  32  amazed me. They gave me presents of their favorite artworks which they had  33  to sell to toueists . I studied the delightful forms of the cactus .I watched for the desert sunsets,and  34  for seashells that had been left there millions of years ago when the desert had been an ocean  35 

What brought about this  36   change in me ? The desert hadn’t changed , 37   I had .I had changed my  38   And by doing so ,I changed an unhappy experience into the most amazing  39  of my life . I was excited by this new world that I had dicovered I had looked out of my self-creatded prison and  40   the stars

33()

A.refused

B.failed

C.managed

D.happened

题型:选择题

地理纤恙螨

A.成虫传播疾病
B.幼虫传播疾病
C.二者皆能
D.二者皆不能

题型:选择题

简述包装机设备运行保养的主要内容。

题型:选择题

现在学界普遍认为和接受:希腊逃亡者是促成欧洲文艺复兴运动的决定性原因。

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