In a theater, or a film or television studio, the set is the scenery built to resemble a real location. It is made by carpenters and other workers, and painted and decorated to look like a real room or whatever location is required for the production. A film studio may build a set outdoors to resemble a whole street or even a small town.

Q:What does the underline word "set" mean in the article?

A.a machine

B.a mathematical term

C.an event

D.a representation of scenery

    Airships are huge balloons with propellers to drive them, and they were once used to carry as many as 200 passengers. The sirships were filled with hydrogen, a light gas. However, hydrogen is also inflammable. There were several disasters in which airships caught fire, and they disappeared by the end of the 1930s. However, airship are now flying again, but they are not common. They are lifted by helium gas, which does not catch fire.

Q:What does the underline word "inflammable" mean?

A.a kind of gas

B.fire

C.easy to catch fire

D.difficult to catch fire

    United States citizens are now enjoying better dental health, as shown by the decreasing  occurring rate of tooth decay.

Q:Which of the following is similar in meaning to "occurring rate" in article?

A.treatment

B.consequence

C.incidence

D.misfortune

    You can select any of these periodicals, like Times, Newsweek and Reader's Digest for your supplementary readings.

Q:The the underline word "periodical" in the article most probably means？

A.a period of time

B.magazine

C.institute

D.movie

    One mistaken idea about business is that it can be treated as a game of perfect information. Quite the reverse, business and life itself are games which we must normally play with very imperfect information. Business decisions are often made with many unknown and unknowable factors, as best poker players. But few business people find it comfortable to admit that they are taking a chance, and many still prefer to believe that they are playing chess, not poker. 

Q:Which of the following can be used in place of  "quite the reverse" ?

A.quite right

B.true enough

C.most unlikely

D.just the opposite