一辆汽车以20m/S的速度沿平直公路匀速行驶,突然发现前方有障碍物,立即刹车,汽

题型:选择题

问题:

一辆汽车以20m/S的速度沿平直公路匀速行驶,突然发现前方有障碍物,立即刹车,汽车以大小是5m/s2的加速度做匀减速直线运动,那么2s内与刹车后6s内汽车通过的位移之比为(  )

A.1:1

B.4:3

C.3:1

D.3:4

考点:匀变速直线运动的位移与时间的关系
题型:选择题

下列词语中加点的字,读音全都正确的一项是(   )

A.马厩(jiù)玷污(diàn)伤痕累累(léi)树影婆娑(suō)

B.缱绻(juǎn) 纤绳(qiàn)衣衫褴褛(lǚ)并行不悖(bèi)

C.胚芽(pī)蹩进(bié)通衢大道(qú)当众推搡(sǎng)

D.自诩(xǔ)华胄(zhòu)命途多舛(chuǎn)深感愧怍(zuò)

题型:选择题

下列图片中的情景应出现在哪两次战争期间

①鸦片战争②第二次鸦片战争③甲午中日战争④八国联军侵华战争

中英《天津条约》签字
外国侵略者坐在清宫皇帝的御座上
[ ]

A.①②B.③④C.②④D.①④

题型:选择题

阅读理解。

     My grandfather was a teacher, he was the headteacher of a school for boys between the ages of

thirteen and eighteen. I know that he was a kind and gentle(温柔的)man at heart, because when I was

young, he gave me presents, and sat me on his knees, and told me stories. But I believe the boys at his

school were afraid of him.

     At school, when he walked into a room full of noisy boys, there was silence at once. When he looked

at a boy with a certain look in his eyes, that boy went red in the face, and looked down at his shoes. If

a boy brought him poor, careless work, the work that was not the best that boy could do, my grandfather picked up the boy’s book and threw it across the room, shouting, “Do it all again, and bring it back first

thing in the morning!” If the boy was late, or if he forgot to bring the work, he had to do it again, and

again, and yet again. My grandfather never forgot. He was a very different man at school, from the man

I saw day by day in his own home.

1..My grandfather was_______.

A.a kind and gentle teacher        

B.a teacher who gave presents to the pupils

C.the headteacher of a boys’ school  

D.afraid of the headteacher

2..When he looked at a boy in a certain way, that boy_______.

A.went red and could not return my grandfather’s look

B.looked back at my grandfather’s red face

C.looked at his shoes to see if they were dirty

D.went red in the face because his shoes were dirty

3..My grandfather did not like to receive_______.

A.worse work than he could do himself

B.work that the boys could not do

C.work that was not as good as the boys could do

D.the most careful work that the boys could do

4..When he received poor work, my grandfather_______.

A.shouted at the boy and threw his work across the room

B.went red in the face

C.threw the book on the floor, and shouted across the room

D.threw the book at the boy

5..He was a different man at home in that_______.

A.he didn’t get angry at school like he did at home

B.he was not as gentle at home

C.he did not throw books about at school like he did at home

D.he did not get angry at home

题型:选择题

天极

题型:选择题

原状土的变水头试验设备包括()。

A.切土器

B.温度计和秒表

C.削土刀和钢丝锯

D.木锤

E.变水头渗透装置

F.天平

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