Read the following article and select the best answer. Article: Moscow,Russia(Space news)-"The computer is a better chess player,"insisted Viktor Prozorov,the loser ." It seemed as if it were laughing after every good move.I know I should have beaten it for the sake of mankind ,but I just couldn't win," he announced and shook his head sadly. Prozorov's disappointment was shared by several grand masters who were present,some of whom were so upset that they shouted at the machine.Many chess players said that this meant the end of chess championships around the world,since the fun had been taken out of the game. The computer walked-or rather,rolled-away with 5,000 dollars in prize money and limited its remarks to a set of noises and light. Question: What was it that Prozorov felt most bitter about? - That he didn't win the$5,000. - That he hadn't tried his best. - That he had lost to a machine. - That this was the end of the chess game.
That he had lost to a machine.

Read the following article and select the best answer. Article: Aside from doing schoolwork and studying, American students must also participate in various extra-curricular activities. Many students get involved in their communities by doing volunteer work at various local organizations. In fact, the school I attend even requires students to perform a certain number of hours of volunteer work per semester. It is part of our study hall grade, as well as a graduation requirement. There are many places to do volunteer work in the community. Some of my classmates volunteer at the local animal shelter, the community table (which provides free meals for needy families), charity stores, and many others. Finding a suitable place to volunteer usually depends on what's available, as well as personal interests. For example, a friend of mine who enjoys swimming volunteers at the recreation center to teach young children how to swim. With all these options out there, I ended up doing most of my volunteer work at a school library and a non-profit bookstore called Friends of the Library. This bookstore sells donated books at cheap prices, and all the profits made are donated to the local library. I thought it was very fitting that I do my volunteer work at a library and a bookstore, because reading has always been very important to me. I love working in the bookstore now, because every sale we make helps our public library expand, and gives it the funds needed to purchase new books. I think everyone should have the opportunity to read, and that we each should do our part to help those who don't have the chance. There is a charity event, called One Book for A Window of Opportunity, in which Chinese students can donate a book to the children of the poor village Fangmaping. They don't have a lot of resources, so reading can be a challenge. To find out more about this event, please visit: http://bbs.enfamily.cn/thread-739278-1-1.html. Question: This passage is supposed to write to _ . - villagers in Fangmaping - the writer's parents - Chinese readers - American readers
Chinese readers

Q: Read the following article and select the best answer. Article: Studies have documented that smiling is a universal and effective way to lift mood. But in the latest research on the power of the smile, researchers led by Marcus Munafo of the University of Bristol in England found that even seeing smiles on the faces of others can have a profound effect on a person's tendency toward violence or aggression -- that is, as long as that person recognizes the smile as one of happiness, and not as a sneer . Munafo and his colleagues conducted a series of experiments involving normal adults and highly aggressive teens referred to a youth program, either by educational authorities or the courts. About 70% of the teens already had a criminal record. In the first experiment, 40 healthy adults, aged 1830, looked at facial expressions on the computer ranging from happy to angry with increasingly difficult ones to _ in between. Participants were asked how angry they felt and then had to rate the images as displaying either happiness or anger -- there was no option for "unclear" or "unable to tell". From these ratings, the scientists could generate a score of their preference toward happiness or anger. Previous research found that aggressive people -- including violent offenders -- tend to consider even a common expression as an unfriendly one. "You looking at me?" can easily turn a simple question into a tragic fight. Based on their original scores, half of the participants were then told by the computer that some of the unclear faces that they had rated as angry should have been scored as happy. This was intended to guide them toward judging the inbetween faces more positively. The other 20 received feedback that simply proved their first choices, creating a control group. After this training, both groups were tested again and the group that received the biased feedback shifted its ratings of unclear faces toward the happy side. Participants were also asked to rate their level of angry feelings again after completing the second round of testing. Those who were trained to consider... Question: The method Munafo and his colleagues used in their research is _ . - field investigation - case study - observation and analysis - experiment and comparison
A: experiment and comparison

(Q).
Read the following article and select the best answer. Article: Inland waters may be grouped into two general classes: standing waters and flowing waters. As is often the case, the boundary between these two classes is not sharp and clear. A pond is an example of standing water. But most ponds are fed by springs or brooks and most have an outlet. Thus some current of changing water flows through them. On the other hand, a river is an example of flowing water. In some places, however, a river may have such a slow current that it is very difficult to detect. Standing inland waters differ in size, in age, and in many _ environmental characteristics. They range in size from roadside puddles to the Caspian Sea. Puddles may last for only a few days or weeks; ponds, for a few hundred to a thousand years. In general, lakes are older, though the waters of some tropical "lakes" disappear completely during each dry season. Standing waters vary from very shallow to very deep, from clear to muddy, from fresh to salty. In flowing waters we roughly distinguish between brooks, creeks, and rivers. The size and age of flowing waters are unimportant. Speed of flow, clearness, oxygen content, and other chemical characteristics are used by scientists in studying flowing-water ecosystems. Question: According to the passage, which of the following characteristics of flowing waters is unimportant? - Clarity. - Size. - Speed of flow. - Oxygen content.
(A).
Size.