出自:合肥财经职业学院-计算机网络技术

已知函数f(x)可导，则△x→0时， lim [f(x0-x)-f(x0)]/x A、-f.(x) B、f.(-x0) C、f.(x0) D、2f.(x0）
函数y=x+x^1/3 在x=0处( ) A、既连续又可导 B、继续但不可导 C、不连续但可导 D、既不连续也不可导
当x→x0时，下列变量中不与ln(x+1)等价的是 A、x B、sinx C、1-cosx D、e^x-1
x→0时，lim |sinx|/x=（ ） A、-1 B、0 C、1 D、不存在
曲线f(x)=x^2-2x 上切线平行于x轴的点是( ) A、( 0，0) B、（1，-1） C、（-1，3） D、 (2,0)
函数y=xsin(1/x)在x=0处连续但不可导 A、正确 B、错误
函数y=xsin(1/x)在x=0处既连续又可导 A、正确 B、错误
函数y=x^2arctanx连续但不可导 A、正确 B、错误
函数y=xsin(1/x)在x=0处既不连续也不可导 A、正确 B、错误
函数y=x^2arctanx既不连续也不可导 A、正确 B、错误
x→1时，lim(1-x)sin[1/(x-1)]=______
设函数f(x)=x^2,则x→2时，lim [f(x)-f(2)]/(x-2)=______
下列函数在给定变化过程中是无穷大量的为（ ） A、y=2x,(x→0) B、y=x2/x,(x→+∞) C、y=sinx/x,(x→0) D、y=(x^2+1)/x^2,(x→+∞)
曲线y=3x与y=log3x的对称轴为（ ） A、x轴 B、y轴 C、直线y=x D、原点
f(x)=|x|,g(x)=√x^2;f(x)=g(x) A、正确 B、错误
若x是无穷小，cosx是无穷小 A、正确 B、错误
函数f(x)在闭区间[a,b]上连续是f(x)在[a,b]上有界的必要条件而非充要条件 A、正确 B、错误
若x是无穷小，e^x是无穷小 A、正确 B、错误
当x→x0时，α(x)* β(x)都是无穷小，|α(x)|+|β(x)|一定是无穷小 A、正确 B、错误
若x是无穷小，lnx是无穷小 A、正确 B、错误
函数f(x)在闭区间[a,b]上连续是f(x)在[a,b]上有界的充要条件 A、正确 B、错误
若x是无穷小，-x是无穷小 A、正确 B、错误
当x→x0时，α(x)* β(x)都是无穷小，(α(x))/(β(x))一定是无穷小 A、正确 B、错误
已知函数y=f(x)的定义域是[0,1]，则f(x^2 )的定义域是______
f(x)=2^x，f(0)=______
JTL Company will ________ our business of bicycle sales in the country. A、set out B、put up C、call for D、take over
Her wish was that he __________ at Beijing University at once. A、studies B、studied C、study D、will study
I’d almost given up hope of finding a house I liked, and then suddenly this one __________ . A、turned over B、turned up C、turned on D、turned down
Not only are cars involved in most of the traffic accidents, but they also __________to the pollution of the air. . A、contribute B、promote C、refer D、matter
This is a river closely ___________ to the lives of the people of the city. A、joined B、exposed C、affected D、related
I don’t expect there any misunderstanding. A、is B、to be C、being D、will be
Please call us for more information as our website is currently construction. A、under B、by C、of D、with
Good night and thanks again. A、You can’t say that B、No, no. It’s what I can do C、How can you say that D、Good night
_________ such a good chance he planned to learn more. A、giving B、Having given C、Having been given D、To be given
, the sales manager began his report with the statistics of last month’s sales. A、By now B、As usual C、So far D、At most
Between 1974 and 1997, the number of overseas vistors expanded_______27%. A、by B、for C、to D、in
- Excuse me, is this the right direction for the school? A、Well, no, you’re going in the wrong direction B、No, don’t ask me C、No, I don’t know D、Don’t go this way
Can I help you with the bag? A、No, no. I can take it myself B、Thank you C、Sorry, you can’t D、No, I’m all right
Do you think I could borrow your dictionary? A、Yes, you may borrow B、Yes, go on C、Yes, help yourself D、It doesn’t matter
Monday Tuesday is OK. I will be free then. A、Either;or B、Neither;nor C、So; that D、Both; and
If you need more information, please contact us __________ telephone or email. A、in B、by C、on D、for
Sorry, I must be leaving now, because there’s a meeting. A、Oh, no, you can’t B、Yes, you can leave if you like C、Do you really have to go? Couldn’t you at least stay for another cup of tea? D、Oh, no. I don’t understand
Hurry up please, or I’ll be late. A、Sorry sir, bur the traffic is thick now B、Well, it’s alright, sir C、How can you say that, sir? D、Oh, we are going the right way
The population of many Alaskan cities has __________ doubled in the past three years. A、larger than B、as great as C、more than D、as many as
Nowhere else in the world __________ more attractive scenery than in Switzerlan@@ A、you can find B、is found C、can you find D、has been found
Yesterday was my birthday. My mother . A、made a cake to me B、made a cake me C、made for me a cake D、made me a cake
________ is no reason for dismissing him. A、Because he was a few minutes late B、Owing to a few minutes being late C、The fact that he was a few minutes late D、Being a few minutes late
I was worried about chemistry, but Mr Brown gave me an A! A、Don’t worry about it B、Congratulations! That’s a difficult course C、Mr Brown is very good D、Good luck to you!
What can I do for you, madam? A、I want a kilo of apples B、You can go your own way C、Thanks D、Excuse me. I’m busy
I am going away. or not she will go is up to her to decide. A、if B、which C、 whether D、that
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