input with options: Read the following article and answer the question. Article: London: It's well known that Charles Darwin's famous theory of evolution annoyed many people because it was against the Biblical view of creation. But few know that it also created problems for Darwin at home with his deeply religious wife, Emma. "Darwin _ the publication of On the Origin of Species to avoid offending his wife," says Ruth Padel, the naturalist's great - great - granddaughter. "Emma told him that he seemed to be putting God further and further off", Padel says in her north London home. "But they talked it through, and Emma once said, 'Don't change any of your ideas for fear of hurting me.'" As the world celebrates the 200th birthday of the man who changed scientific thought forever and the 150th anniversary of his book today, even his opponents admitted he was a giant figure. Though opposition to his theory continues, it is the elegant explanation of how species evolutes through natural selection that makes his 200th birthday such a major event. More than 300 celebrations have been planned in Britain alone, where Darwin's face graces the 10-pound bill along with that of Queen Elizabeth II. Shrewsbury, the central England town where Darwin was born and raised, is holding a month-long festival for its most famous son. Down House, his former home near London, will hold a permanent exhibition recreating some of his most famous experiments. Many more events have been planned all over the world. What would he be doing if he were alive today? Padel thinks he would properly be studying DNA and the immune system. Question: The main purpose of the author is _ . Answer:
OPTIONS:
- to say something about Darwin and his wife
- to introduce Charles Darwin and his theory of evolution
- to sing high praise for the book On the Origin of Species
- to report some celebrations of Darwin's 200th birthday and the 150th anniversary of his books
output: to report some celebrations of Darwin's 200th birthday and the 150th anniversary of his books

Q: Read the following article and answer the question. Article: Students at the Yale School of Architecture handed over the keys to a house that they designed and built to its new owners at a ceremony on Sept. 25 at 20 King Place. The ceremony held to hand over the house will mark the completion of the school's First-Year Building Project 2008. since 1967, the Yale School of Architecture has offered its first-year graduate students the opportunity to design and build a structure as a part of their education. Unique among architecture schools, this program is compulsory for all members of the class, and students frequently refer to it as their reason for applying to Yale. This year's class of 64 worked to design, develop and document an idea for a 2,100-square-foot, wheelchair-accessible, two-family house. Students had to use sustainable resources and energy-efficient technology. The budget for the project is always less than actual construction costs, and the builders-in-training had to seek supplementary donations, mostly in the form of construction materials. The result this year was a "designer" home, dressed entirely in cedar , fitted inside with Swedish-designed cabinetry and partially powered by solar energy. The floors are bamboo, another natural material prized for being quickly replenished . This year, the student-builders used a pre-cast foundation system, which, in addition to its other labor-saving virtues, uses 75% less concrete than the poured system. The first-year class of 2008 raised $100,000-worth of donated materials. But when it came to constructing the inside steps of the house, they used old drafting tables from the School of Architecture that would otherwise have been thrown out. Ground was broken in May for the house at King Place, and the whole class worked on site until the construction was finished. Question: How long did it take the students to finish the house ? Answer:

OPTIONS:
- More than five months
- Almost five months
- About six months
- Less than four months

A: Almost five months

Read the following article and answer the question. Article: Analysis of the composition of quicksand shows that there are four key ingredients--sand, obviously water, clay and salt. Together these materials form a structure resembling a house of cards, with large water-filled gaps between the sand particles, which are loosely glued in place by the clay. As long as it's left alone, the structure remains stable. But as soon as it's disturbed, by stepping on it, the clay changes from a jelly-like consistency to a runny liquid. The effect is the same as stirring a pot of yoghurt. Liquefying the clay makes the quicksand about one million times runnier, and the whole house of cards comes tumbling down, with you inside it. Very quickly, the sand sinks to the bottom and the water floats to the top. This is where the salt comes in. When there's enough salt present, as soon as the clay particles liquefy, electrical charges make them begin to stick together to form bigger particles and these also settle with the sand. Quicksand is a mixture which looks like solid, but behaves more like a liquid. Despite its murderous reputation, quicksand does not such people under and swallow them, although it can hold a person in firm grip. The human body is more buoyant in quicksand than in water, and sooner or later anyone trapped in it will float. Unlike most liquids, quicksand's viscosity, or "runniness" can suddenly change if it comes under pressure, for example under a human foot. The surface gives way and the victim quickly sinks in up to the knees, surrounded by an area of dirty things that turns semi-solid around its victim. Escaping from the quicksand's grip requires a large amount of force. Without something solid to pull at, people often find they are stuck fast. Pulling at one leg simply makes the other one sink further. So how do you escape from quicksand's control? Stay still and call for help. Staying still stops you sinking any further, until--with luck--help arrives on the scene. If no one appears and you need to draw yourself out, gently lie down on your back until your... Question: From the passage we can learn that _ Answer:

OPTIONS:
- as long as you are strong enough, you can pull yourself up from quicksand on your own
- clay glues sand particles loosely, which makes quicksand stable, unless it is disturbed
- because anyone trapped in quicksand will float, there is little possibility of him dying
- looking like solid ground, quicksand is actually liquid

Answer:
clay glues sand particles loosely, which makes quicksand stable, unless it is disturbed