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[单选题]

Karl’s aim is to inform. the viewers that cigarette advertising in TV is illegal,____

A.isn’t it.

B.is it.

C.isn’t h

D.is h

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发布时间：2022-12-04

更多“Karl’s aim is to inform. the viewers that cigarette advertising in TV is illegal,____”相关的问题

第1题

设f是拓扑空间（X，τ)上的任意复函数，定义 φ（x，V)=sup{|f（s)-f（t)|：s，t∈V}， V∈τ，x∈V； φ（x)=inf{φ（x，V)：V∈τ)

设f是拓扑空间(X，τ)上的任意复函数，定义

φ(x，V)=sup{|f(s)-f(t)|：s，t∈V}， V∈τ，x∈V；

φ(x)=inf{φ(x，V)：V∈τ)，x∈V．

证明φ是上半连续的，并且f在点x连续当且仅当φ(x)=0．从而任何复函数连续点的集都是一个G_δ集．

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第2题

设X是赋范空间，S（X)为X的单位球面，定义δX:[0，2]×S（X)→[0，1]为 δX（ε，x)=inf{1-‖x+y‖/2：y∈S（X)，‖x-y‖≥ε}，称δ

设X是赋范空间，S(X)为X的单位球面，定义δ_X:[0，2]×S(X)→[0，1]为

δ_X(ε，x)=inf{1-‖x+y‖/2：y∈S(X)，‖x-y‖≥ε}，称δ_X为X的局部一致凸模．若对ε∈(0，2]及x∈S(X)都有δ_X(ε，x)＞0，则称X是局部一致凸空间．

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第3题

George Bernard Shaw s plays aim at social reforms. He holds that the theatre has a didacti

c function. Please write a passage to tell us what morals Shaw wants to teach us in his well-known play Pygmalion.

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第4题

In the Classical theory, Chomsky s aim is to make linguistics a science. This theory is ch

aracterized by three features: (1) emphasis on prescription of language; (2) introduction of transformational rules; and (3) grammatical description regardless of language formation.

此题为判断题(对，错)。

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第5题

y=xexp(-x)的凸区间为()。

A.(-inf,2)

B.(-inf,-2)

C.(2,inf)

D.(-2,inf)

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第6题

f=2x2-lnx的递增区间()。

A.[1/2,inf]

B.[-1/2,inf]

C.[0,inf]

D.(0,1/2)

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第7题

y=xexp（－2x)的凹区间为（－inf,2)。（)

y=xexp(-2x)的凹区间为(-inf,2)。()

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第8题

Some time ago, a store advertised rebuilt vacuum cleaners of a nationally known brand at t

he absurdly (荒谬地) low price of $ 12.50. Why was this done？ Surely the store could not【36】to sell good vacuum cleaners【37】this price. As a matter of fact, any customer who tried to buy one would find it was"【38】". He would be told that the one in the window was "the only one left" and had to remain on【39】, or that "it had been sold" before he entered the store.

The【40】aim of this kind of advertising is to lure (引诱) customers【41】the store for the purpose of【42】them to buy some other higher price brand. This is called "bait (诱饵) advertising". In【43】the $12.50 vacuum cleaners, the manufacturer whose name was used went to【44】and obtained an order【45】the store to employ the brand name for that purpose.

Why did the managers of the manufacturing【46】go to such lengths to【47】this abuse (恶习) in advertising？ They realized that misrepresentation of their firm's name was sure to【48】public confidence in their products. The honest businessman wants to keep his customers【49】so that they will return to buy again and again. He builds good【50】by conducting his business on a【51】of trust and confidence.【52】, he wants other businessmen's advertising, as well as his own, to【53】the public's respect because he realizes that anything that【54】confidence in advertising tends to injure honest advertisers as well as the fraudulent (欺诈的)【55】. That is why businessmen have set up their own agencies to police advertising.

(41)

A．allow

B．supply

C．afford

D．provide

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第9题

函数f(x)=(1-cos(x))/x2在什么区间连续()。

A.(-inf,0)及(0,inf)

B.R

C.(-pi/2,pi/2)

D.(-pi/2,0)及(0,pi/2)