Problem:OPTIONS:
- it has the hottest ground in the world
- it has the largest number of desert plants
- it is the driest place in North America
- it is the lowest point in the western hemisphere

Read the following article and answer the question. Article: Death Valley National Park, California Situated in the southeast part of California, Death Valley covers an area of more than 3.3 million acres, even larger than the famous Yellowstone National Park. Death Valley is a land of extremes. It is one of the hottest places on the surface of the earth. The highest ground temperature ever recorded was 93.9degC on July 15,1972. It is the driest place in North America with an average rainfall of only 1.96 inches a year. Death Valley also boasts the lowest point in the western hemisphere. Death Valley got its name in 1849, when a group of emigrants were looking for a short cut to the gold fields of California. They were given the bad advice and went into the valley. Some of them were killed by the bad weather and harsh roads. When the rest finally walked out, they gave the area its name by saying to it "goodbye, Death Valley". As the name might suggest, there is very little apparent vegetation within Death Valley. First impression, however, can be deceiving . Death Valley includes more than 1,000 species of plants that have adapted to the harsh conditions. Death Valley is also a land of beauties. Sunrise and sunset are two of the most spectacular attractions. Depending on different angles, they show many of the area's different moods. For the best viewing, plan to be there approximately one hour before sunset or before sunrise. Death Valley National Park is open year round. In spite of the climate, hiking is one of the most popular activities in Death Valley. The surrounding mountains produce spectacular wildflower displays along with snow-covered peaks, breathtaking sand dunes , abandoned mines and industrial structures. Question: All the following statements are the most special natures of Death Valley except_.[ Answer:
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A: it has the largest number of desert plants

Problem:OPTIONS:
- The special phenomenon about birds pairs.
- The conflict of bird pairs.
- The cooperation of bird pairs.
- The piece of music for bird pairs.

Read the following article and answer the question. Article: It takes two to duet , and one question for scientists is how these coordinated performances arise -- in birds. Are they the result of cooperation, a way in which one pair signals to others that they've got it together? Or are they the result of conflict, evolving to avoid one partner's song interfering with the other's? A study of duetting in Peruvian warbling antbirds suggests that it might be a little of both, and that context is everything. Joseph A. Tobias and Nathalie Seddon of the University of Oxford show in Current Biology that sexual conflict can cause the female of a pair that normally cooperates to "jam" the male's song by singing over it. The researchers exposed antbird pairs to recorded songs of other antbirds and monitored the songs the pairs produced. In one experiment, they played the songs of an intruding pair. In this case, the resident pair "both are likely to lose their territory, so both should cooperate," Dr. Tobias said. And they do. They produce a coordinated duet that in effect tells the intruders to keep away. But when the researchers played the song of a single female, the pair behaved differently. "You'd expect the resident female to be highly motivated to defend her position in the partnership," Dr. Tobias said. And that's what occurs. The male sings its heart out, flirting with the single female, and the female of the pair does its best to interfere with the song by singing over it, apparently to make her mate less attractive to the other female. "It's clear that the male doesn't like what she's doing," Dr. Tobias said. The behavior "breaks up what is otherwise a very cooperative situation into a more complicated signal," he added. It's the first evidence of this kind of signal jamming among pairs, Dr. Tobias said. And in that it leads the male to alter its song to avoid the female's interfering notes, it shows that this kind of conflict could, over a long period, drive the evolution of coordinated song. Question: Which of the following is the topic of this passage? Answer:
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A: The piece of music for bird pairs.

Problem:OPTIONS:
- The profits they make are all donated to the ACS.
- They struggle to develop their business without any help.
- They have helped find a cure for those with cancer.
- All their relatives joined in their activity.

Read the following article and answer the question. Article: I had a perfect life. No one died; no one was sick; we were all happy and loving life. Then I discovered my grandfather had cancer. No matter how much I told myself he could live, and that he might not die, somehow I still felt as if it was a death sentence. He was so young, only 63. He fought so hard. Whenever I feel my own life taking a turn for the worse, as if things will never get better, I remember how many years he lived fighting such a scary and difficult disease. He died with a huge party going on around him, with all his friends and family. They ate and I honestly didn't know how to cope. I never cried alone. I had the compassion of my friends and the support of my family and teachers. I just remembered my grandfather's wish that we should celebrate his life. That's how we came up with the idea for Hives for Lives----a business my sister and I started where all the profits go to the American Cancer Society (ACS). We sell honey, honeycomb, beeswax candles and lip balm, which all come from our beehives in Virginia. It started out small, 2 years ago, with just an idea. During our first year we donated more than $2,000 to the ACS. The next year a man who belonged to my grandparents' bee club willed his honey to us, and our little business grew. We sold at craft fairs, wine festivals, schools, and to anyone else who would buy! We had my uncle sell in California and my grandmother sell in Chicago. We have sold honey in 13 states---even in Puerto Rico. This year we donated more than $10,000 to the ACS and we're hoping to do more next year. Hopefully our business will help find a cure or just improve the life of someone with cancer. I feel like Hives for Lives is a way to honor my grandfather. Honor his love, his life and his strength. With Hives for Lives reminding me of my grandfather every day, I feel as if I can move on in life, that he will always be alive in my heart and memories. It made me capable of coping with his death, because I felt like I had truly honored his wish of celebrating his life. I... Question: Which of the following statements is true according to the text? Answer:
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A:
The profits they make are all donated to the ACS.