更多"[单选题]The city has__________populati"的相关试题:
[单选题]Passage Two
Generationsof Americans have been brought up to believe that a good breakfast is essentialto one′s life.Eating breakfast at the start of the day,we have been told,and told again,is as necessary asputting gasoline in the family car before starting a trip.But for many people,the thought of food as the first thing in the morning is never a pleasure Sodespite all the efforts,they still take no breakfast.
Between 1977 and 1983,the latest year for which figures could beobtained,the number of people who didn′t have breakfast increased by 33%from8.8 million to 11.7 million--according to the Chicago-based Market ResearchCorporation of America.For those who dislike eating breakfast,however,thereis some good news.
Several studies in the last few years have shown that,for adults especially,there may be nothing wrong with omitting breakfast."Going without breakfast does not affect work,"said Arnold
E.Bender,former professor of nutrition at Queen Elizabeth College in London,"nor does giving people breakfast improve work."Scientific evidence linkingbreakfast to better health or better work is surprisingly inadequate(不充分),and most of the recent work involves children,not adults."The literature,"says one researcher,Dr.Earnest Polite at theUniversity of Texas,"is poor."
Which of these is mentioned inthe second paragraph?
A.The number of the people who skip breakfast has increased.
B.Many people fill their cars withgasoline in the?morning.
C.8.8 million people got involved in astudy on?eating habits.
D.A company carried out a research in1983.
[单选题]There are two general approaches to attacking a (1)encryption scheme.The first attack is known as cryptanalysis.Cryptanalytic attacks rely on the nature of the algorithm plus perhaps some knowledge of the general characteristics of the ( ) or even some sample plaintext- ciphertext pairs. This type of ( ) exploits the characteristics of the algorithm to attempt to deduce a specific plaintext or to deduce the key being used. If the attack succeeds in deducing the key, the effect is catastrophic: All future and past messages encrypted with that key are compromised. The second method, known as the ( )-force attack, is to try every possible key on a piece of ( ) until an intelligible translation into plaintext is obtained. On average, half of all possible keys must be tried to achieve success.
（1）处应选________.
A.stream
B.symmetric
C.asymmetric
D.advanced
[单选题]This one is of the two.
A.the best
B.better
C.the better
D.much better
[单选题]Passage Two
Every year just after Christmas theJanuary Sales start.All the shops reduce their prices and for two weeks,theyare full of people looking for bargains.My husband and I do not normally go tothe sales as we don′t like crowds and in any case are short of money as we haveto buy lots of Christmas presents.
Last year,however,I took my husband with me to the sales at thelarge shop in the center of London.We both needed some new clothes and werehoping to find a television set.When we got to Oxford Street,it was so crowdedthat we decided to split up and meet again at the underground station.So Ileft my husband and started looking around the shops.Unfortunately all theclothes were in very large sizes and so were not suitable for me.But I did buya television at a very cheap price,so I felt quite pleased with myself.
When I arrived at thestation,my husband was not there.So I sat down in a nearby car6 to have a cupof tea.I quickly finished my tea when I saw my husband and went out to meethim.He looked very happy.Then I saw he was carrying a large and heavycardboard box."Oh,dear!"I thought.Yes,we had no new clothes buttwo televisions.We shall not be going to the sales again.
In this passage,the word"bargain"could best be replaced by"something__"
A.given to people
B.offered at a reduced price
C.offered,sold or bought which isexpensive
D.sold for the purpose of reaching anagreement
