爬行动物营体内受精,雄性均有交配器。()

题型:判断题

问题:

爬行动物营体内受精,雄性均有交配器。()

考点:新闻记者主持人资格考试爬行纲爬行纲题库
题型:判断题

利用如图所示的装置可测量滑块在斜面上运动的加速度。一斜面上安装有两个光电门,其中光电门乙固定在斜面上靠近底端处,光电门甲的位置可移动,当一带有遮光片的滑块自斜面上滑下时,与两个光电门都相连的计时器可以显示出遮光片从光电门甲至乙所用的时间t。改变光电门甲的位置进行多次测量,每次都使滑块从同一点由静止开始下滑,并用米尺测量甲、乙之间的距离s,记下相应的t值;所得数据如下表所示。

完成下列填空和作图:

(1)若滑块所受摩擦力为一常量,滑块加速度的大小a、滑块经过光电门乙时的瞬时速度v1测量值s和t四个物理量之间所满足的关系式是_______;

(2)根据表中给出的数据,在给出的坐标纸上画出图线;

(3)由所画出的图线,得出滑块加速度的大小为a=____________m/s2(保留2位有效数字)。

题型:判断题

每年6月,是出国留学结果尘埃落定的时候。有中学志愿者从“出国党”们留下的教材、教辅(原书多定价高)中发现了商机。如果利用这些二手书盈利,筹集慈善资金,他们可以尝试以下做法

①建议未来想出国的同学不再购书  ②在外语培训名校附近开办二手书书店

③在一些中学建立二手书营销网络  ④低价收购二手书并捐献这些书籍

A.①②

B.①④

C.②③

D.③④

题型:判断题

阅读理解

     I don't know how I became a writer, but I think it was because of a certain force in me that had to

write and that finally burst through and found a channel. My people were of the working class of people. My father, a stonecutter, was a man with a great respect and veneration (崇敬) for literature. He had a

tremendous(惊人的) memory, and he loved poetry, and the poetry that he loved best was naturally of

the rhetorical kind that such a man would like. Nevertheless it was good poetry, Hamlet's Soliloquy,

Macbeth, Mark Antony's "Funeral Oration", Grey's "Elegy", and all the rest of it. I heard it all as a

child;I memorized and learned it all.

     He sent me to college to the state university. The desire to write, which had been strong during all my

days in high school, grew stronger still. I was editor of the college paper, the college magazine, etc., and

in my last year or two I was a member of a course in play writing which had just been established there.

I wrote several little oneact plays, still thinking I would become a lawyer or a newspaper man, never

daring to believe I could seriously become a writer. Then I went to Harvard, wrote some more plays

there, became obsessed with (着迷于) the idea that I had to be a playwright, left Harvard, had my plays

rejected, and finally in the autumn of 1926, how, why, or in what manner I have never exactly been able

to determine. But probably because the force in me that had to write at length sought out its channel, I

began to write my first book in London. I was living all alone at that time.I had two rooms-a bedroom

and a sitting room-in a litter square in Chelsea in which all the houses had that familiar, smoked brick and

creamyellowplaster look.

1. We may conclude, in regard to the author's development as a writer, that his father________.

A. made an important contribution      

B. insisted that he choose writing as a career

C. opposed his becoming a writer  

D. insisted that he read Hamlet in order to learn how to be a writer

2. The author believes that he became a writer mostly because of________.

A. his special talent        

B. his father's teaching and encouragement

C. his study at Harvard    

D. a hidden urge within him

3. The author________.

A. began to think of becoming a writer at Harvard

B. had always been successful in his writing career

C. went to Harvard to learn to write plays

D. worked as a newspaper man before becoming a writer

4. The author really started on his way to become a writer______.

A. when he was in high school    

B. when he was studying at Harvard

C. when he lived in London      

D. after he entered college

题型:判断题

屋顶的面积是50m2,大气对屋顶的压力是______(大气压取1标准大气压)这么大的压力没能把屋顶压塌的原因是______台风时屋顶会向上掀翻的原因是______.

题型:判断题

船舶的航向有( )。

A.罗经航向

B.真航向

C.航迹向

D.陀螺航向

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