Đề thi tuyển sinh cao đẳng năm 2014 môn: tiếng Anh; khối A1 và khối D1 - Mã đề thi 712

 in one direction when a source of electrical energy such as a battery is connected to the 
metal. Hence we have an electric current flowing through the wire, and this is what makes metals such good 
conductors of electricity. The only other common solid conducting material that pencil users are likely to 
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encounter is graphite (what the ‘lead’ of a pencil is made from). Graphite is a form of carbon and again the 
carbon atoms bond in such a way that there is a sea of electrons that can be made to flow as an electric 
current. Likewise, if we have an ionic substance like salt we can make the electrically charged ions flow to 
create a current but only when those ions are free to move, either when the substance is a liquid or dissolved in 
water. In its solid state an ionic substance like salt cannot conduct electricity as its charged ions cannot flow. 
Electrical insulators are substances that cannot conduct electricity well either, because they contain no 
charged particles or any charged particles they might contain do not flow easily. Water itself is a poor 
conductor of electricity as it does not contain a significant amount of fully charged particles (the ends of a water 
molecule are partly charged but overall the molecule is neutral). However, most water we encounter does 
contain dissolved charged particles, so it will be more conductive than pure water. Many of the problems that 
occur when touching electrical devices with wet hands result from the ever-present salt that is left on our skin 
through perspiration and it dissolves in the water to make it more conductive. 
By Helena Gillespie and Rob Gillespie. Science for Primary School Teachers. OUP 
Question 36: Electrical conductivity is ______. 
A. completely impossible for silicon 
B. impossible for any substance when it is dissolved in water 
C. one of the most important properties of metals 
D. one of the key properties of most solid materials 
Question 37: According to the passage, a metal can conduct electricity due to ______. 
A. the absence of free electrons 
B. the way its atoms bond together 
C. its atoms with a positive charge 
D. the loss of one electron in the core of its atoms 
Question 38: The word “outermost” in paragraph 1 mostly means ______. 
A. nearest to the inside B. the lightest 
C. the heaviest D. furthest from the inside 
Question 39: The atoms of a metal can bond together because ______. 
A. the lost electrons cannot move freely in the sea of electrons 
B. negatively charged electrons attract positive ions 
C. they lose all of their electrons 
D. electrons can flow in a single direction 
Question 40: Salt in its solid state is not able to conduct electricity because ______. 
A. it has free electrons B. its charged ions are not free to move 
C. it cannot create any charged ions D. its charged ions can flow easily 
Question 41: The word “they” in paragraph 3 refers to ______. 
A. charged particles B. electrical insulators 
C. charged ions D. electric currents 
Question 42: Water is a poor conductor because it contains ______. 
A. only a small amount of fully charged particles 
B. no positive or negative electric charge 
C. only a positive electric charge 
D. only a negative electric charge 
Question 43: We can have problems when touching electrical devices with wet hands because ______. 
A. the water dissolves the salt on our skin and becomes more conductive 
B. the water itself is a good conductor of electricity 
C. the water containing no charged particles makes it more conductive 
D. the water contains too many neutral molecules 
Question 44: Which of the following is NOT true according to the passage? 
A. Some materials are more conductive than others. 
B. Graphite is a common solid substance that can conduct electricity. 
C. Salt can conduct electricity when it is molten or dissolved. 
D. Pure water is much more conductive than most water we encounter every day. 
Question 45: Which of the following could best serve as the title of the passage? 
A. Electrical Devices B. Electrical Conductivity 
C. Electrical Energy D. Electrical Insulators 
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the 
word or phrase that best fits each of the numbered blanks from 46 to 55. 
Why is it that many teenagers have the energy to play computer games until late at night but can't find the 
energy to get out of bed (46)_______ for school? According to a new report, today's generation of children are 
in danger of getting so (47)________ sleep that they are putting their mental and physical health at 
(48)________. Adults can easily survive on seven to eight hours' sleep a night, (49)________ teenagers require 
nine or ten hours. According to medical experts, one in five youngsters (50)_________ anything between two 
and five hours' sleep a night less than their parents did at their age. 
This (51)_________ serious questions about whether lack of sleep is affecting children's ability to 
concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time 
and poor concentration is well (52)_________. Research has shown that losing as little as half an hour's sleep a 
night can have profound effects (53)________ how children perform the next day. A good night's sleep is also 
crucial for teenagers because it is while they are asleep (54)________ they release a hormone that is essential 
for their 'growth spurt' (the period during teenage years when the body grows at a rapid rate). It's true that 
they can, to some (55)________, catch up on sleep at weekends, but that won't help them when they are 
dropping off to sleep in class on a Friday afternoon. 
By Tim Falla and Paul A. Davies. Solutions Advanced. OUP 
Question 46: A. behind time B. about time C. in time D. at time 
Question 47: A. less B. much C. little D. few 
Question 48: A. danger B. risk C. threat D. jeopardy 
Question 49: A. because B. or C. whereas D. so 
Question 50: A. gets B. makes C. puts D. brings 
Question 51: A. results B. comes C. rises D. raises 
Question 52: A. arranged B. established C. acquired D. organized 
Question 53: A. at B. on C. to D. in 
Question 54: A. at which B. where C. that D. which 
Question 55: A. point B. level C. extent D. rate 
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is CLOSEST in 
meaning to the sentence given in each of the following questions. 
Question 56: They arrived too late to get good seats. 
A. As they got there too late, there were no good seats left. 
B. They had to stand for the whole show. 
C. They got good seats some time after they arrived. 
D. Although they were late, they found some good seats. 
Question 57: When there is so much traffic on the roads, it is sometimes quicker to walk than to go by car. 
A. There is so much traffic these days that it is more pleasant to walk than to drive. 
B. During rush hours, walking gives me much more pleasure than driving in the heavy traffic. 
C. The traffic is always so heavy that you’d better walk to work; it’s quicker. 
D. It is faster to walk than to drive in the heavy traffic at certain time of the day. 
Question 58: John said, “You’d better not lend them any money, Daisy.” 
A. John commanded Daisy not to lend them any money. 
B. John asked Daisy if she had lent them any money. 
C. John advised Daisy not to lend them any money. 
D. John ordered Daisy not to lend them any money. 
Question 59: This village is inaccessible in winter due to heavy snow. 
A. We cannot gain permission to this village in winter because of heavy snow. 
B. Nobody likes to come to this village in winter because of heavy snow. 
C. Heavy snow makes it impossible to reach the village in winter. 
D. We have no difficulty reaching this village in winter because of heavy snow. 
Question 60: It’s difficult for me to understand what he implies. 
A. I find it difficult to understand what he really means. 
B. Understanding what he implies is found difficult. 
C. What he implies is not very difficult to understand. 
D. To understand what he really means is difficult to find. 
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Question 61: I forgot to lock the door before leaving. 
A. I didn’t remember whether I locked the door before leaving. 
B. I left without remembering to lock the door. 
C. I locked the door before leaving, but I forgot about it. 
D. I remembered that I left the door locked before going out. 
Question 62: It was only when I left home that I realized how much my family meant to me. 
A. Not until I left home did I realize how much my family meant to me. 
B. I left home and didn’t realize how meaningful my family was. 
C. Before I left home, I realized how much my family meant to me. 
D. As soon as I left home, I found out what a family could do without. 
Question 63: I had two job offers upon graduation, neither of which was appropriate for my qualifications. 
A. The two jobs offered to me after my graduation didn’t suit my qualifications. 
B. Though I wasn't qualified enough, two jobs were offered to me upon graduation. 
C. Both of the job offers I had prior to my graduation were appropriate for my qualifications. 
D. I was offered two jobs soon after my graduation, both of which were suitable for my qualifications. 
Question 64: "Get out of my car or I'll call the police!" Jane shouted to the strange man. 
A. Jane politely told the man she would call the police if he didn’t leave her car. 
B. Jane plainly said that she would call the police. 
C. Jane threatened to call the police if the man didn’t leave her car. 
D. Jane informed the strange man that she would call the police. 
Question 65: There is no question of changing my mind about resigning. 
A. I should have changed my mind about resigning. 
B. They asked me no question