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2. CH. 2 it의 정체를 파악하라!

3. 2-1 가주어 it
136. Is it socially desirable or acceptable to change certain genes of a normal human individual to alter or enhance traits? 137. It is important on a daily basis to give your body a stretch to help improve your circulation and prevent injuries It pays to explore your choice of occupation from every angle and to collect as much information as you can before making up your mind.

4. 2-1 가주어 it
139. Millions buy a lottery ticket and imagine what it would be like for their money problems to be over once and for all With the help of a microscope, it is possible to observe blood cells and to learn to recognize them It would be all wrong for a scientist to get emotional when describing a daffodil; and it would be all wrong for a poet not to.

5. 2-1 가주어 it
142. You don’t know how convenient it is living so close to the station It makes perfect sense that getting a driver’s license has become the rite of passage to the adult world When we are under stress, it’s important whether we reach for the bag of potato chips or go for a swim or a jog.

6. 2-1 가주어 it
145. It matters little who does the work so long as it is done It is paradoxical that many educators and parents still differentiate between a time for learning and a time for play without seeing the vital connection between them It is not surprising that some entrepreneurs have marketed glacier ice commercially for drinks.

7. 2-1 가주어 it
148. It can be argued that the clock was the first truly automatic machine that attained any importance in human life It cannot be denied that we owe many useful things to science, but it is doubtful whether more science will give us true happiness It is estimated that 38,000 Koreans married non-Korean citizens in 2007, accounting for about 11 percent of all marriages that year.

8. 2-2 가목적어 it 151. Scientific advances make it possible for us to
discover and invent what we have never dreamed
of.
152. In America, students find it relatively simple to
enter university, but they must study extremely
hard to stay in.
153. We make it a rule not to call on others without
an appointment.

9. 2-2 가목적어 it 154. You may find it worth considering negotiating
with your company to put you in the best
financial position possible.
155. Make it your mission to know what’s going on
in the world — in current events, music, fashion,
science, and even TV.
156. If you don’t relate what you know to what you
read, you may find it difficult to understand what
you read.

10. 2-2 가목적어 it 157. The invention of the microscope made it possible
for scientists to learn more about what causes
diseases.
158. In our country, workers took it for granted that
they would remain with one company until they
reached retirement age.
159. Many vegetarians find it disgusting that people
raise animals just to kill them.

11. 2-2 가목적어 it 160. We owe it to our better diet that we now live
much longer.
161. Market forces will see to it that employers pay
a reasonable salary not a minimum wage.
162. The argument has it that schools are not merely
teaching places, but also institutions in which
character is built.
163. I take it from your silence that you are not
satisfied with my answer.

12. 2-3 강조구문: it is … that+(S)+V
164. More than any other development, it has been the exceptionally rapid growth of computer technology that has changed every aspect of our lives It is positive connections between people that are a source of mental and physical well-being It is by classic stories we read and films we saw that our first conceptions of relationships, love, marriage, and happiness were powerfully influenced.

13. 2-3 강조구문: it is … that+(S)+V
167. Sometimes it’s not the job you do but your approach to it that makes the difference in how much joy you get from your work The most important role of these rivers was in agriculture because it was the ability to grow crops that allowed people to settle in one place It is generally the idle who complain they cannot find time to do what they wish to do. In truth, people can generally find time enough for their work; it is not the time but the will that is wanting.

14. 2-3 강조구문: it is … that+(S)+V
170. It is while you are patiently toiling at everyday tasks that the meaning and the greatness of life can dawn on you It was not until the mid-eighteenth century in England that agricultural improvements made it possible for more food to be grown to meet the demands of a growing population.

15. 2-3 강조구문: it is … that+(S)+V
172. It is only the rise of technology, and not the rise of modern political ideas, which has refuted the old and terrible idea that only violence and rule over others could make some men free Thomas Edison was looked upon as a fool by his teachers, and it was only because his mother inspired him to believe that one day he would do something fine and great that he became the man he was.

16. 2-3 강조구문: it is … that+(S)+V
174. What is it that motivates us to get up every morning and do the job we have chosen for a career? 175. How is it that little children are so intelligent and men so stupid? It must be education that does it A glance at the map is sufficient to explain how it was that Greece became civilized before the other European lands.

17. 2-4 비인칭주어 it
177. According to a doctor’s research, it seems that exercise can make blood vessels in the brain stronger and more fully developed It took Michelangelo three years to complete the Statue of David, his seventeen-foot marble masterpiece It has taken hundreds of years and the efforts of millions of people to find ways to make democracy function properly.

18. 2-4 비인칭주어 it
180. It seems that conversation is sometimes more like a boxing match than an opportunity to listen and learn It appears that brain-imaging technology will provide the basis for the lie detectors of the not so distant future It happened that humans were given a big brain and the ability to use it properly.

19. 2-4 비인칭주어 it
183. When she reached her car, it occurred to her that she might have forgotten to turn off the gas range It turned out that the album had a long and painful birth, but the effort was worth it.