Read the following article and select the best answer. Article: Melissa and Roman McCoy were looking forward to the Christmas. But on December 5th, Roman got a phone call that changed everything. Melissa had been in a terrible car accident, and the doctor had little hope she would make it. "He said the next six to eight hours were critical in determining whether she would live or not. And I just wept," Roman said. "A lot of pressure built up inside, and I just dropped my cell phone on the ground when I heard that. It was the worst feeling that I've ever felt." Melissa, a college English professor, was on her way to class when her car hit into a mound of dirt and rolled over several times. Roman recalled, "I could only think how I am going to raise my kids without their mother. If she did live, how would I take care of her and my kids? The questions you never want to ask yourself, I had to face." Melissa survived the first night. She had injuries to her stomach and lungs and worse, she suffered severe injuries to her brain. She didn't recognize anyone, even her own husband. "Over the next few days, she remained unresponsive to treatments. The brain surgeon never really gave us much hope." Days passed and Melissa didn't improve. Christmas Eve, Roman was by her side in the hospital. Then, he received a Christmas gift he would never forget. "That evening, she woke up and was just as clear as before, recognized everybody, and was able to read. It was just amazing. I saw her bright smile and her sense of humor. The only way I could describe it is that the weight of the darkness that had hovered over me was just completely gone." Melissa quickly improved, and she is back to being a wife, mom, and professor. There is no sign of damage from the brain. Melissa said, "I thank him for everything now. It's not just 'thank you for my job, thank you for my children.' It's 'thank you for every aspect of my life.'" Question: What's the relationship between Melissa and Roman? - Mother and son. - Wife and husband. - Sister and brother. - Teacher and student.
Wife and husband.

Read the following article and select the best answer. Article: The average temperature around the world is rising. People living in the US Midwest might find this fact hard to believe, though. Two new studies show that in America's heartland, summers are now cooler and wetter than they were in years past. The scientists suggest that the change in the Midwest climate may have happened because of farming. The first study was led by David Changnon, a climatologist at Northern Illinois University in DeKalb. A climatologist studies the climate of an area, which includes measuring rainfall, temperature and wind. Climatologists want to know how these factors have changed in the past, and how they'll change in the future. Changnon and his team studied temperature records from Chicago and 13 other sites in the Midwest. "These two changes--lower temperatures and more rainfall--may be connected by humidity," Changnon says. Humidity is the measure of how much moisture is in the air. Humid air, which contains a lot of moisture, takes longer to heat up than dry air. So where did the extra _ in the air come from? Changnon points to farms in the region. As plants grow, they pull moisture from the ground and release it into the air. And among plants, soybean and corn plants release a lot of moisture. Midwestern farms now plant more soybeans and corn than in the past, with 97 percent of farmland today planted with these two crops. He also notes that the plants are planted closer together now than they used to be, so there are more plants per acre than in the past. The second study was led by famous scientists from the US. The researchers studied a vast area of the United States that stretches from South DaKota to Oklahoma and the Texas panhandle. They found that in 1930, farmers in that region irrigated only about 1.8 million acres of farmland, an amount roughly half the size of Connecticut. In 1980, however, farmers irrigated nearly 15 million acres--more land than Vermont and New Hampshire combined. Question: According to the passage, which factors will you refer to if you want to study the climate of an area? - Sunlight and rainfall. - Rainfall and longitude. - Rainfall and altitude. - Rainfall and wind.
Rainfall and wind.

Read the following article and select the best answer. Article: Almost 80% of the Americans have stated their opposition to cloning pet animals such as cats and dogs, yet companies still try to make a business out of selling cloned pets. Pet cloning has been promoted as a way to "bring back" or "copy" a beloved companion animal. However, studies have shown that cloning remains an experimental technology with many failures. Behind each lovely picture of a cloned cat or dog lie hundreds of animals that were kept in lab cages, receiving bad treatment to produce just that one cloned animal. For all that, you end up with a cloned animal who is unlikely to appear like the original physically or behaviorally and may experience serious health problems. Also, while pet cloning companies are charging customers up to $150,000 for a cloned pet, millions of homeless animals of the same species are available in US animal shelters for around $100. Unfortunately, most of these animals are killed for lack of adopting homes. With No Pet Cloning campaign, the American Anti-Vivisection Society (AAVS) tries to protect both animals and people from harm. They campaigned until the US companies that sold cloned animals closed their doors. First it was Genetic Savings & Clone Inc. and then it was BioArts International. When BioArts was closed, its owner, Lou Hawthorne, finally had to _ the problems of pet cloning. According to Hawthorne, he has seen numerous failures during his pet cloning attempts, "One clone----which was supposed to be black and white----was born greenish-yellow where it should have been white (we still have no good explanation for how that happened)." The AAVS is educating the public about the animal suffering and is seeking regulation of cloning activities. They will continue to take the lead in protecting animals from the threats of pet cloning. Question: According to the passage, companies keep on selling cloned pets to _ . - carry on scientific studies - get economic interests - protect pet animals - comfort animal lovers
get economic interests