42. Snow blindness can be prevented by ___________

A. moving one’s gaze back and forth

B. walking ahead and keeping looking around

C. making up for the discomfort of one’s eyes

D. providing the eyes with something to focus on

41. When the eyes are tired, tears flow out __________.

A. to clear the vision

B. to make the eyes stop searching

C. to make the vision unclear

D. to produce more and more liquid

40. To prevent snow blindness caused by the strong light from snow, wearing glasses or not _________.

A. depends on whether the snow is white enough

B. makes no difference

C. makes much difference

D. depends on whether the snow is thick

39. What does the “Wheelchair Access” probably mean?

A. It’s a kind of sidewalk built for disabled people.

B. It’s an entrance to a house built for the disabled people.

C. It’s a street built for the disabled people to have a walk.

D. It’s a special path for the disabled people to get to the garage.

　　　　　　　　　　　　　　　　　 (B)

Many people believe the glare from snow causes snow blindness. Yet, with dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow blindness, when exposed to several hours of “snow light”.

The United States army has now determined that glare from snow does not cause snow blindness in troops in a snow-covered country. Rather, a man’s eyes often find nothing to focus on in a broad space of snow-covered without-grass land. So his gaze continually moves and jumps back and forth over the entire landscape in search of something to look at. Finding something, hour after hour, the eyes never stop searching and the eyeballs become tired and the eye muscles ache. Nature makes up for this discomfort by producing more and more fluid (液体) which covers the eyeball. The fluid covers the eyeball in increasing quantity until it makes eyes difficult to see clearly, and the result is total, even though for a short time, snow blindness.

　　 Experiments lead the Army to a simple method of overcoming this problem. Scouts (侦察员) ahead of the troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark-colored objects ahead on which they can focus too. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop searching the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a continuous white land is overcome.

38. Which of the following statements about the house is NOT true?

A. You will spend extra money to build a room in the garage after buying the house.

B. You can have enough room to enlarge your house after you buy it.

C. You don’t need to water the plants in the garden by yourself.

D. If you buy the house, you can also have the dishwasher and carpet.

37. During summer time, the front of the home may look _________.

A. green　　　　　 　　　　　　　　　　　　　　　　　 B. white

C. red　　　　　　 　　　　　　　 　　　　　　　　　 D. black

36. If one dollar equals 8 Yuan, one square feet equals 0.093 square meters, how much does one square meter of the house cost?

A. About 15,140 Yuan.　　　　 　　　　　　　 B. About 13,120 Yuan.

C. About 13,160 Yuan.　　　　　　 　 D. About 14,150 Yuan.

34.　 A. before　　 　　　　　　　　　 B. from　　　　　 　　　　 C. above　　　 　　　　　　　 D. behind

33.　 A. take　 　　　　　　　　　　　　　　 B. turn　　　　　　　　　　　　　　　　　 C. look　　　　　 　　　　　 D. reach