热点试题

[ 物理 ] 连接在电池两极上的平行板电容器,当A板下移一点使两极板之间的距离减小时,则( )A.电容器

连接在电池两极上的平行板电容器,当A板下移一点使两极板之间的距离减小时,则(  )
A.电容器的电容C变大
B.电容器极板的带电量Q减少
C.电容器两极板间的电场强度E变大
D.电容器两极板间的P处电势降低

2016-05-16 | 0

[ 数学 ] 列竖式计算.708×4=460×7=430×7=3600×5=

列竖式计算.
708×4=
460×7=
430×7=
3600×5=

2016-05-20 | 0

[ 数学 ] 在______里填上>、<或=.20平方分米______0.2平方米6平方米______6

在______里填上>、<或=.
20平方分米______0.2平方米6平方米______600平方厘米 32个月______3年.

2016-05-21 | 0

[ 数学 ] 计算:-32+|-5|-18×(-13)2.

计算:-32+|-5|-18×(-
1
3
)2

2016-05-21 | 0

[ 数学 ] 函数若在区间上单调递减,则的取值范围   .

函数
在区间上单调递减,则的取值范围      

2016-05-22 | 0

[ 语文 ] 选择合适的词语填在括号里,使句子更具体。镇静 平静 悲哀 悲伤 1.他吸了一口气使自己(

选择合适的词语填在括号里,使句子更具体。
镇静 平静 悲哀 悲伤
1.他吸了一口气使自己(  )下来,开始慢慢地遛那个大家伙。
2.奶奶几年前去世了,我的心里十分(  )。
3.一阵风吹过,(  )的水面泛起了微微的波纹。
虽然……但是…… 不是……而是……
4.他发现,这(  )翻车鱼,(  )一条大鲈鱼。
5.道德问题(  )只是一个简单的正确或错误的问题,(  )实施起来却有一定难度,特别是当你面对着很多诱惑的时候。

2016-05-26 | 0

[ 语文 ] 仿句练习(4分)生命真是一个奇迹。一枝从污泥长出的夏荷,竟开出雪一样洁白纯净的花;一只细小

仿句练习(4分)
生命真是一个奇迹。一枝从污泥长出的夏荷,竟开出雪一样洁白纯净的花;一只细小的萤火虫,竟能在茫茫黑夜里发出星星般闪亮的光;                                        

2016-05-27 | 0

[ 英语 ] 根据短文内容和首字母提示,在下文空格处填入适当的词使短文完整。 (每空一词)We all

根据短文内容和首字母提示,在下文空格处填入适当的词使短文完整。 (每空一词)
We all need a healthy environment, but we 小题1:waste every day and it does harm to our environment. Though we are young, we can still do something to help. In fact, even the 小题2:everyday activities can make a real 小题3:to the environment. Here are some ideas for you to live a green life.
Remember these three words: reduce, reuse and recycle.
Reduce means “don't waste things” .This s 小题4: money and reduces pollution and waste going into the environment. Before we buy something new, think if it is really n 小题5: or maybe the old one will be just as good! When we do buy things, choose local products if possible, and try not to buy too many things from a 小题6:.
Reuse means “use again”. Use things for as long as possible. When we buy things, make sure that they last a long time. We should take care of them so that they will last, and we should r 小题7: them if we can instead of throwing them away and buying new ones. Don't use a paper cup or a paper bag. It’s better to use a china cup and a lunch box b 小题8:you can use them again.
Recycle means “change things into something else”. A 小题9: it takes energy to change something into something else, it’s better than throwing things away or b 小题10:them. Find out what can be recycled in your neighbourhood and take part in recycling programmes. We should also buy products made from recycled materials, such as recycled paper, to help save trees.

2016-05-28 | 0

[ 英语 ] If you have a sore throat, you'd better _____

If you have a sore throat, you'd better _____ hot tea _____ honey.      [    ]
A. drink; with
B. to drink; with
C. drink; has
D. to drink; has

2016-05-28 | 0

[ 物理 ] 在500m速度滑冰比赛中,选手同时出发。观察比赛中如图情景可知,从出发到此刻前面选手的平均

在500m速度滑冰比赛中,选手同时出发。观察比赛中如图情景可知,从出发到此刻前面选手的平均速度要               (填“大于”、“等于”或“小于”)后面选手的平均速度,我们观众是通过                 的方法迅速得出结论的。

2016-05-31 | 0