Read the article and select the best answer. Article: Summer cools down in August when the city features a lot of jazz to send excitement to any music fan. Beginning August 28, the city hosts a week of jazz performances in a variety of places. This year's annual Jazz Festival in Grant Park will offer a "tribute to New Orleans" with performers from the city, honoring the birthplace of Jazz. Jazz fans who want to be part of the week-long celebration can start with a free concert at Millennium Park's famous Pritzker Pavilion on Monday, August 28 at 6:30 pm. * Other events will include: Tuesday, August 29 -- the Jazz Institute of Chicago presents the Fourth Annual Gala Concert. Wednesday, August 30 -- Heat up Wednesday night with a ride to the best jazz hot spots and learn a bit of history of the genre with the Jazz Institute's Jazz Club Tour, which starts at 6 pm until midnight. For one low price, visit more than a dozen Jazz Clubs. The tour covers nearly every inch of Chicago. *The Chicago Jazz Festival Officially opens with a ticketed performance at the Symphony Center on Thursday, August 31. Then, the festival moves to Grant Park on Friday, September 1, for three days of free music on three stages. The event opens daily at 11 am. * Performance hours are: Jazz on Jackson Stage 12 pm -- 4:30 pm. Jazz & Heritage Family Stage 12:30 pm -- 4:30 pm. Petrillo Music Shell 5 pm -- 9:30 pm. * In addition to the music, the Chicago Jazz Festival features an art fair lying in the rose garden just south of Jackson. The fair offers all kinds of handmade crafts and artwork. Question: Which of the following events need to pay to attend? Options: A: The concert at Millennium Park. B: The Fourth Annual Gala Concert. C: The Jazz Institute's Jazz Club Tour. D: The art fair in the rose garden.
C

Read the article and select the best answer. Article: Welcome to Our Clubs in Masonic Village Art Club The Art Club provides a place for aged people to paint, improve their artistic talents and show their works of art. Members can also sell items that they painted. The money raised goes toward providing painting supplies for club members. Anyone may join the Art Club, whether you already know how to paint or you want to learn how to better express your creativity. Painting supplies are provided by the club for free. Time: Wednesdays, Thursdays & Sundays from 1 p.m. to 3 p.m. in the Freemasons Cultural Center Art Studio. Cost: $12 per year Computer Club This club is meant for aged people with little knowledge of computers. Various topics are discussed at each meeting about computers (such as the Internet, software and email) as well as related technologies. The club has a computer lab with high-speed Internet connection. Members of the club have free access to the computer lab. Time: Tuesdays and Thursdays from 1 p.m. to 3 p.m. in the Computer Resource Room on Level 2 of Smith North. Open general lab sessions are available for free. Cost: $35 per year Tai Chi for Arthritis Arthritis is a common disease for old people. The joints in the patients' body often hurt badly. Tai Chi for Arthritis is designed to improve the quality of life of those people who are suffering from arthritis using Sun-style Tai Chi. This style includes quick-moving steps and exercises that may improve mobility, breathing and relaxation. The movements don't require deep bending. Time: Wednesdays from 3:30 p.m. to 4:30 p.m. in the Irem Clubhouse. Cost: $65 per year Question: If a member of Computer Club attends an open general lab session, he or she _ . Options: A: is required to buy a laptop B: has to pay $35 for a session C: has to take an iPad with him/her D: needn't pay for the session
D

Read the article and select the best answer. Article: Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in order to cut the greenhouse gases they send out, which is thought to be responsible for global warming. Thanks to special bacteria in their stomachs, kangaroo flatulence contains nomethane and scientists want to transfer that bacteria to cattle and sheep who produce large quantities of the harmful gas. While the usual image of greenhouse gas pollution is a billowing smokestack pushing out carbon dioxide, farm animals' passing wind contributes a surprisingly high percentage of total emissions in some countries. "Fourteen percent of emissions from all sources in Australia is from enteric methane from cattle and sheep," said Athol Klieve, a senior research scientist with the Queensland state government. "And if you look at another country such as New Zealand, which has got a much higher agricultural base, they're actually up around 50 percent," he said. Researchers say the bacteria also make the digestive process much more efficient and could potentially save millions of dollars in feed costs for farmers. But it will take researchers at least three years to isolate the bacteria, before they can even start to develop a way of transferring it to cattle and sheep. Another group of scientists, meanwhile, has suggested Australians should farm fewer cattle and sheep and just eat more kangaroos. And about 20 percent of health-conscious Australians have eaten the national symbol already. "It's low in fat, it's got high protein levels and it's very clean in the sense that basically it's the free-range animal," said Peter Ampt of the University of New South Wales's institute of environmental studies. Question: Scientists intend to put the bacteria into cattle and sheep _ . Options: A: to prevent them from sending out greenhouse gases B: to help Australian farmers to earn more money C: so that they can protect Australian ecosystem D: so that they can make full use of special bacteria
A