（精品推薦）2017屆高考二輪復習英語學案--專題十九 閱讀理解

brockelehurst believes it will be possible to make something used in salad cream , for instance , more like that in butter . the key will be to do this while keeping the salad cream liquid and not turning it into a solid state .
1.the significance of brocklehurst’s research is that         .
a.it suggested a way to keep some foods fresh without using some chemicals
b.it discovered small globules in both cream and butter
c.it showed the secret of how bacteria increase in cream and butter
d.it found that cream and butter share the same chemical composition
2.according to brocklehurst , we can keep cream fresh but _____.
a.removing its fat   b.killing the bacteria
c.reducing its water      d.changing its structure
3.the underlined word “colonies” refers to______.
a.tiny globules       b.watery regions
c.bacteria society   d.little departments
4.commercial use of the research finding will be possible if salad cream can be made to stand bacterial attack         .
a.by changing its chemical composition     b.by turning it into a solid lump
c.while keeping its structure unchanged d.while its liquid form remains
                                    d
five years ago, david smith wore an expensive suit to work every day. “i was a clothes addict.” he jokes. “i used to carry a fresh suit to work with me so i could change if my clothes got wrinkled.” today david wears casual clothes—khaki pants and a sports shirt—to the office. he hardly ever wears a necktie. “i am working harder than ever.” david says, “and i need to feel comfortable.”
 more and more companies are allowing their office workers to wear casual clothes to work. in the united states, the change from formal to casual office wear has been gradual. in the early 1990s, many companies allowed their employees to wear casual clothes on friday（but only on friday）.this became known as “dress-down friday” or “casual friday”. “what started out as an extra one-day-a-week benefit for employees has really become an everyday thing.” said business consultant maisly jones.
 why have so many companies started allowing their employees to wear casual clothes? one reason is that it’s easier for a company to attract new employees if it has a casual dress code.” “a lot of young people don’t want to dress up for work,” says the owner of a software company, “so it’s hard to hire people if you have a conservative（保守的）dress code.” another reason is that people seem happier and more productive when they are wearing comfortable clothes. in a study conducted by levi strauss and company, 85 percent of employers said that they believe that casual dress improves employee morale（心境，士氣）. only 4 percent of employers said that casual dress has a negative influence on productivity. supporters of casual office wear also argue that a casual dress code helps them save money. “suits are expensive, if you have to wear one every day,” one person said. “for the same amount of money, you can buy a lot more casual clothes.”