曲线y=13x3-x2+5在x=1处的切线的倾斜角为( ) A.3π4 B.π3 C.

题型:选择题

问题:

曲线y=
1
3
x3-x2+5
在x=1处的切线的倾斜角为(  )
A.
4
B.
π
3
C.
π
4
D.
π
6
考点:函数的极值与导数的关系
题型:选择题
What do you think of stress? Is it a good thing or a bad thing?
Most of the students think stress can do harm       them in some ways. There’s a story about a teenager in a middle school. He even       his study because of the stress from school and family. We also usually        that someone turns to psychological (心理的)doctors because of heavy working stress. There is no doubt that some people think stress is a dangerous wolf.
On the other hand, other people argue that stress is not a bad thing. They       stress can produce momentum(动力)in the end. For them, right attitude and action can reduce stress and make it        . When I was a child, my mom always pushed me to study hard. She wished I could go to an ideal        for further education. I experienced stress for the first time. Born to a poor family, I deeply knew        was not easy for us, and everything my mom did to me was just to hope I could live a better life in the future.        the saying goes, “no pains, no gains.” So I did what my mom expected because I didn’t want to let her down. At last, I did measure up(达到标准) to my mom’s expectation and go to college       . Thanks to my mom’s push! Thanks to the stress! In this way, I don’t think stress is a bad thing.
Overall, stress is not a bad thing in       . The key is how we deal with it.
小题1:
A.forB.inC.toD.of
小题2:
A.began withB.showed offC.gave upD.cheered for
小题3:
A.wonderB.decideC.promiseD.hear
小题4:
A.doubtB.believeC.disagreeD.forget
小题5:
A.usefulB.difficultC.strangeD.terrible
小题6:
A.companyB.collegeC.factoryD.f arm
小题7:
A.lifeB.spiritC.opinionD.silence
小题8:
A.ThenB.ButC.AsD.Or
小题9:
A.quietlyB.wildlyC.speciallyD.successfully
小题10:
A.himselfB.myselfC.itselfD.herself
题型:选择题

“十、一”期间,某公园票价上涨50%后是12元,这个公园原票价是多少元?

题型:选择题
已知幂函数f(x)的图象经过点(2,4),那么f(x)的解析式为(  )
A.f(x)=2xB.f(x)=x2C.f(x)=2xD.f(x)=x+2
题型:选择题

关于板材隔墙施工墙板高度的说法,正确的是()。

A.刚性连接按结构净高尺寸减15mm;柔性连接比刚性连接高20mm

B.刚性连接按结构净高尺寸减15mm;柔性连接比刚性连接高25mm

C.刚性连接按结构净高尺寸减20mm;柔性连接比刚性连接高25mm

D.刚性连接按结构净高尺寸减20mm;柔性连接比刚性连接高15mm

题型:选择题

由于要推动气门开闭,汽车工程师研发出了凸轮轴来控制气门的开闭,不同年代的发动机也搭配了不同的凸轮轴种类,OHV代表什么意思()。

A.顶置气门底置凸轮轴

B.单顶置凸轮轴

C.双顶置凸轮轴

D.顶置凸轮轴

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