1.单选题- (共8题)
的相反数是( )
的系数和次数分别是（ ）
，2
y
A. A区 B. B区 C. A区或B区 D. C区
2.选择题- (共3题)
Here's an interesting fact: Every teenager American seems to have, at some point, appeared drunk or rude online. This generation didn't invent stupidity, of course; it's just the first to post the picture online the entire world to see. And that's the rub: Employers are getting clever at looking you up online. They look at what people post and wonder. Is that new salesperson, the one who made a strange face on collegehumor.com,likely to do the same at a conference?”
Anything that you put online is public information. This should seem pretty obvious to the generation who grew up on these sites, right? But it's not. When it comes to the Net, young people tend to fell for two traps. One:“ Many of them believe it's truly private, and they'll determine who gets to sec what, and it will stop there.” Wrong! And two: “Their sense of what things will be like in the next stage of their life is not realistic.”
So what do you do about that picture? Take it down! But what if it is now on other sites? After all, a friend can post your photo elsewhere, and from there, it can be posted on another site. This problem is so common that a new industry has appeared: identity management, which helps people remove embarrassing material.
The new industry serves to remind us that we've got to be careful out there. Most of us have got drunk or done something we regret. But putting it online is another matter. And for some, it's even become an addiction, one with a nickname: Crackspace. Young or old, students and managers alike turn into exhibitions, putting every aspect of their lives on public display(展示).
Yes, it can be great fun. But should those of us posting pictures of ourselves dancing in our underwear be given a good comment? In a forgiving, kindly environment, yes. But what about in a business environment? Well, you decide.
3.填空题- (共8题)
＝x﹣4与方程2x+5＝3（x﹣1）的解相同，则m＝_____．4.解答题- (共9题)
（1）如图1，如果点P和点Q分别从点A，B同时出发，沿数轴负方向运动，点P的运动速度为每秒2个单位，点Q的运动速度为每秒6个单位．
①A，B两点之间的距离为 ．
②当P，Q两点相遇时，点P在数轴上对应的数是 ．
③求点P出发多少秒后，与点Q之间相距4个单位长度？
（3）如图2，如果点P从点A出发沿数轴的正方向以每秒2个单位的速度运动，点Q从点B出发沿数轴的负方向以每秒6个单位的速度运动，点M从数轴原点O出发沿数轴的正方向以每秒1个单位的速度运动，若三个点同时出发，经过多少秒后有MP＝MQ？
by+8=2018 ，求当x＝－4，y＝
时，式子3ax－24by3+6 的值．
（1）若一次性购物不超过100元，则不予优惠；
（2）若一次性购物超过100元，但不超过300元，按标价给予九折优惠；
（3）若一次性购物超过300元，其中300元以下部分（包括300元）给予九折优惠；超过300元部分给予八折优惠.
小李两次去该超市购物，分别付款99元和252元.现在小张决定一次性购买小李分两次购买的物品，他需付款多少元?
（1）①如图1，若∠DOE＝25°，求∠AOC 的度数；
②如图2，若∠DOE＝α，直接写出∠AOC的度数（用含α的式子表示）；
（2）将图 1中的∠COD 绕点O按顺时针方向旋转至图 2 所示位置．探究∠DOE 与∠AOC 的度数之间的关系，写出你的结论，并说明理由．
已知：直线AB，CD相交于点O，且OE⊥AB．
（1）过点O画直线MN⊥CD；
（2）若点F是（1）中所画直线MN上任意一点(O点除外)，若∠AOC＝35°，求∠EOF的度数．
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【1】题量占比
单选题:(8道)
选择题:(3道)
填空题:(8道)
解答题:(9道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：1
5星难题：0
6星难题：16
7星难题：0
8星难题：5
9星难题：3