Read the article and select the best answer. Article: Many people believe the glare from snow causes snowblindness. Yet, with dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snowblindness ,when exposed to several hours of" snow light". The United States army has now determined that glare from snow does not cause snowblindness in troops in a snow -covered country. Rather ,a man's eyes frequently 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 which covers the eyeball. The fluid covers the eyeball in increasing quantity until it makes eyes difficult to see dearly, and the result is total, even though for a short time, snowblindness. Experiments led the Army to a simple method of overcoming this problem. Scouts 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 snowblind or lost. In this way the problem of crossing a continuous white land is overcome. Question: To prevent snowblindness caused by the strong light from snow, wearing glasses or not _ . Options: 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
B

Read the article and select the best answer. Article: Grey clouds move as low as smoke over the treetops at Lolo Pass. The ground is white. The day is June 10.It has been snowing for the past four days in the Bitterroot Mountains.Wayne Fairchild is getting worried about our trek over the Lolo Trail-95 miles from Lolo Montana to Weippe in Idaho, across the roughest country in the West. Lewis and Clark were nearly defeated 200 years ago by snowstorms on the Lolo.Today Fairchild is nervously checking the weather reports.He has agreed to take me across the toughest,middle section of the trail. When Lewis climbed on top of Lemhi Pass,140 miles south of Missoula,on Aug.12,1805,he was astonished by what was in front of him;"high mountain chains still to the West of us with their tops partially covered with snow."Nobody in what was then the US knew the Rocky Mountains existed,with peaks twice as high as anything in the Appalachians back East. Today their pathway through those mountains holds more attraction than any other ground over which they traveled,for its raw wilderness is an evidence to the character of two cultures:the explorers who braved its hardships and the Native Americans who prize and conserve the path as a sacred gift. It remains today the same condition as when Lewis and Clark walked it. The Lolo is passable only from July to mid-September.Our luck is holding with the weather,although the snow keeps getting deeper.As we climb to Indian Post Office,the highest point on the trail at 7,033 ft,we have covered 13 miles in soft snow,and we hardly have enough energy to make dinner.After a meal of chicken,I sit on a rock on top of the ridge .There is no light visible in any direction,not even another campfire.For four days we do not see another human being.We are occupied with the things that mix fear with joy.In our imagination we have finally caught up with Lewis and Clark. Question: We learn from the text that the Lolo Pass _ . Options: A: has changed a lot since 1805 B: is the meeting point of three cultures C: remains much the same as it was 200 years ago D: now attracts a large number of tourists to visit
C

Read the article and select the best answer. Article: Jennifer's Hurricane Experience I have evacuated lots of times in my life. To make sure everything is safe, my family have to move a lot of things. I usually help my mom and my brothers help my dad. Mom and I take all of the special keepsakes to low safe places. Another thing we have to do is to take our sailboat out into deep water and anchor it really well. When it's time to anchor the sailboat, Scott, my father's brother, comes over. I just need to wait in the car with my mom and brothers before we evacuate. John's Hurricane Experience My family evacuated for hurricane Opal in 1995. We left two days early because we were going to my dad's 35thHigh School Reunion . There was a lot of traffic getting out of town. But we didn't get into trouble as we had arrived at the school. During hurricane Georges, I slept. But there was a lot of lightning, thunder and rain at that night. The next morning, there were a lot of branches, twigs and leaves everywhere. Catherine's Hurricane Experience This year, we experienced two hurricanes, Earl and Georges. We did the same thing in both hurricanes. We would always be watching the news. There was a lot of rain ... a whole lot of rain. The hurricane never really got close enough to do very much damage. I have never evacuated, and I don't think that I ever will. Ryan's Hurricane Experience I am a police officer on an island in the Texas Gulf Coast. I was directly affected by the violent weather throughout the hurricane season. Our department was ordered to stay on the island while all the other citizens were evacuating. I didn't feel at all prepared for the situation. So I went to the grocery store and purchased some food. I thought a survival kit would have helped ease some of the tension in my mind. Question: Which of the following is NOT true about the hurricanes? Options: A: Hurricane Opal hit in 1995. B: Hurricane Georges hit at night. C: Hurricane Opal hit on John's way to the school. D: Hurricane Georges blew down many branches.
C