Read the article and select the best answer. Article: Overlooking the swollen banks of the Missouri River at Omaha's riverfront landing, one scientist has an important explanation for the past three months of flooding .While many consider the flood to be man-made, a result of water released by the US. Army Corps of Engineers upriver, his theory aims to look deeper into the root of the problem. "The Missouri River is flooding," said Dr. James Hansen, Director of NASA's Goddard Institute for Space Studies, during a visit to Omaha on Tuesday."We've had floods that usually only happen once in every hundred years a couple of times on the Missouri River recently. That's one of the expected consequences of the increasing level of atmospheric carbon dioxide." Hansen, who is considered to be one of the world's leading experts on global warming , said the Missouri River is an example of how global warming is affecting the earth ."Unless you do statistics ,and you see that the frequency of these events is changing , it's not so easy to see that changes are occurring , because the climate system has large inertia ,"he said . Hansen explained, "The ocean is four kilometers deep, and the ice sheets are two or three kilometers thick , so they don't respond immediately as we begin to change the atmospheric composition .We've only experienced about half of the warming that will be caused by the gases already in the atmosphere .The full effect is going to be felt by our children and grandchildren .And if we continue to increase the amount of CO2, the effect will be even larger." Hansen drew a comparison, "If we spend more money than what we're taking in , we're leaving a debt for our children and grandchildren to deal with ."According to Hansen, the responsibility lies in effective policy making to fight against global warming .That includes a gradual reduction in carbon emissions .Hansen suggests that a rising price be placed on carbon emissions, which should be collected from the fossil fuel companies at the first sale . Without effective measures taken by the government,... Question: Many people think the reason for the flooding of the Missouri River is _ . Options: A: the army releasing water upriver B: the effects of global warming C: the increasing level of carbon dioxide D: the dam at Omaha's riverfront breaking
A

(Question)
Read the article and select the best answer. Article: "Mom, can I bake some bread?" We were 15, my best friend, Hanna, and I, determined to try our hands at creating some beautiful bread. "It's not worth the trouble," my mother said. "It takes lots of time and makes a big mess. Our bakery bread is delicious without all that effort." Begging was useless. Mom's "no" meant "No!" But several weeks later, opportunity knocked: My parents were going out for the evening. I immediately invited Hanna to be my partner in bread-baking crime. We studied the recipe. That was easy. "Mix oil into flour then beat in four of the eggs, one at a time, with remaining sugar and salt." We were not good at breaking eggs. I tried to learn from my mother. "Gradually add eight cups of flour. When dough holds together, squeeze it." We took turns working like that. "Is the dough 'holding together'?" we asked each other. I remembered my neighbor's instructions: "If it's too sticky, add some flour; if too dry, add water." We added water. Then more flour. Then more water. By then, the mass of our dough had grown very much. "Place dough on floured surface and squeeze till smooth," the recipe instructed. We took turns burying our hands in the damp dough, pinching, squeezing, and feeling it leak between fingers. "Clean and oil bowl, then return dough to bowl. Cover and let dough rise in warm place for 1 hour." This was good news --- we'd have a break. On dirtied kitchen chairs, we dreamed about our beautiful bread. "See?" we would tell my mom. "Isn't it worth the work?" Hanna and I couldn't help glancing at the rising process every few minutes. But nothing was happening. "Maybe something will happen in the hot oven," I said. Unfortunately, when we removed the loaves from the oven, they were like hard stones. Mom was right; it takes time and effort. It sometimes makes a mess. But still it feels good, somehow, to be part of that long, ongoing chain of bread bakers. Since that night, both Hanna and I have learned to do it right. Question: The passage mainly tells us _ . Options: A: the process of making bread B: the conflict between mother and daughter C: the first experience of making bread D: the way of doing housework
(Answer)
C

Ques: Read the article and select the best answer. Article: More than 2,400 years ago, a sickness struck Athens. The disease is said to have killed up to one third of all Athenians, including their leader Pericles. The huge loss of life helped to change the balance of power between Athens and its enemy, Sparta, in the ancient world. Historians say the sickness began in what is now Ethiopia. They say it passed through Egypt and Libya before it entered Greece. Knowledge of the disease has come mainly from the writings of the ancient Greek historian Thucydides, who survived it. So what caused the fall of Athens? Now, a study based on genetic testing says it was probably typhoid fever. Greek researchers announced the results. Journal of Infectious Diseases published the findings online last week. Researchers from the University of Athens tested human remains from an ancient burial place in the Greek capital. The researchers collected genetic material from teeth. They say tests found genetic evidence similar to that of the modern-day Salmonella . Manolis Papagrigorakis led the University of Athens team. He says the findings throw light on one of the most debated mysteries in medical history. Typhoid fever is a life-threatening disease that is common today in developing countries. Experts say there are more than 21,000,000 cases each year. Typhoid can be spread by food or drink that has been handled by a person infected with the bacteria that causes it. Bacteria in human waste can pollute water supplies. So water used for drinking or to wash food can also spread the infection. Hand washing is important to reducing the spread of typhoid. And there are vaccines that can help prevent it. Some people recover but continue to carry the bacteria. These carriers can get sick again. And they may continue to infect others. Doctors can do tests to make sure the bacteria has left the body. Question: According to Manolis, which of the following is TRUE? Options: A: Typhoid is what was called Salmonella in ancient times. B: Genetic material has been alive for many years. C: A common disease could be found in ancient times. D: Typhoid was one of the deadly diseases in ancient Greece.
Ans:
D