若函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5),且f′(x)

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问题:

若函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5),且f′(x)是函数f(x)的导函数,则f′(1)=(  )

A.24

B.-24

C.10

D.-10

考点:导数的运算
题型:选择题

短文填词(共10小题;每小题1分,满分10分)

Dear Mum and Dad,

小题1:The college entrance examination is around the _____,

小题2:I wish I could have a heart-to-heart talk with you. T______ to

小题3:your _____(鼓励) and unselfish love, I have been

小题4:_____ great progress in my studies. It will be less than

小题5:three weeks before I take the exam, _____ makes me under

great pressure. Therefore, good studying conditions and timely

小题6:help will _____ me a lot of good.

My dream is the very one you always have. In order to make full

小题7:use of the time, I decided to make a few _____ (详细的) study plan

小题8:for the exam. What’s _____, it’s also necessary that I do some

小题9:p_____ exercise once in a while so that I can keep fit.

小题10:All in all, I’m quite _____ (自信)of my future life and I do wish

you good health and a happy life.

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关于曲线运动下列说法正确的是(  )

A.做曲线运动的物体所受合力一定不为零

B.合外力不为零的运动一定是曲线运动

C.曲线运动的速度一定是变化的

D.曲线运动的速度方向一定是变化的

题型:选择题

患儿女,10岁。因双眼视力逐渐下降2年来就诊。无夜盲史。检查:双眼视力为0.1,验光结果:OD:-1.5DS、OS:-1.75DS,双眼矫正视力0.2;外眼正常,屈光间质透明,眼底检查未见异常。

为进一步诊断,应进行的检查有()。

A.FFA

B.B超

C.VEP

D.ERG

E.EOG

F.CT

题型:选择题

标准状况下,2.8g一氧化碳与多少克氧气的体积相等

题型:选择题

国际邮件按照运输方式分为:航空邮件、()和空运水陆路邮件。

A.SAL

B.特快专递邮件

C.水陆路邮件

D.陆路邮件

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