In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Q: Article: Chinese President Hu Holds Telephone Talks With Bush Chinese President Hu Jintao on Tuesday spoke over phone with George W. Bush about international cooperation to cope with the ongoing global financial turmoil . The leaders exchanged ideas about the planned international financial summits and strengthening international cooperation to stabilize the financial markets. Bush said the prefix = st1 /United Stateshopes to make joint efforts with the international community to seek measures to overcome the crisis and maintain the stability of the world economy. Hu, for his part, said Chinahas noted the measures taken by theU.S.government to stabilize the domestic financial market. The measures are conducive to the stability of the world economy and financial markets, Hu said. The Chinese government has taken a series of important measures to _ the financial crisis and maintain the stability of financial and capital markets, as well as ensure steady economic growth, he added. The government of Chinawill continue to assume a responsible attitude toward the Chinese people and people of other countries, and to work closely with the international community to maintain the stability of the global economy and financial markets, President Hu said. (Xinhua News Agency October 21, 2008)
Answer: exchange ideas about keeping working internationally and a planned meeting.

A: The two presidents held the talk to _
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Q: Article: It is your sense of smell that quickly tells you there is good food in the kitchen, or your smelly socks need to be washed. But how do we recognize smell? Particular smells turn on certain groups of brain cells , scientists say. When your nose catches a slight smell of something, one of 1,000 different types of odor-receiving cells pick it up. These cells send an electrical signal to a special part of the brain. A group of scientists studied mouse brains using some particular odors like vanilla, apples and fish. They looked at thin slices of each mouse's brain to see which brain cells had been turned on by each odor. The scientists discovered that each odor produces a similar pattern of active cells in different mice. So, a certain combination of cells can tell a mouse that it is smelling vanilla, apples, fish, or any one of the thousands of other smells. Scientists could use studies like this to create a map. It could show which parts of the brain are activated by different smells. Some other scientists, however, say that researchers should also study animals that do not live in a lab, which have spent their lives smelling things in the natural world. With more smelling experience, they might show quite different patterns.
Answer: found each smell creates a similar pattern of active cells in different mice

A: By doing mouse experiments, the scientists _ .
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Q: Article: Taking a trip to Philadelphia can be rewarding experience or absolute disasters---it all depends on pre-trip homework. To make planning easier, Huffington Post Travel Series recommends attractions for those planning Philadelphia family vacations. The Philadelphia Museum of Art Located on 26thStreet and Benjamin Franklin Parkway, the Philadelphia Museum of Art features more than 225, 000 pieces in its vast collection, dating back to the first century A.D. Guests can discover modern art exhibits, clothing collections gathered throughout time and classic posters. Audio tours are also available. Price: adults, $ 16; children 12 to 17, $ 12; children 11 and under, free. The Please Touch Museum The Please Touch Museum on 4231 Avenue of the Republic offers kids the chance to explore, discover and learn in a fun environment. The museum features six interactive zones where kids and parents are encouraged to play and learn about science, the environment and more. Exhibits include Flight Fantasy, where kids learn about flying machines, and River Adventures, which teaches kids about science, nature and weather. Price: adults, $15; children under the age of 1, free The Philadelphia Zoo The Philadelphia Zoo sits on a 42-acre Victorian garden. The zoo features 1,300 animals, including a number of rare and endangered species. While visiting the zoo families can see big cats, zebras, giraffes, endangered turtle species and penguins. The zoo also includes rides for kids, such as a Rainforest Carousel and Camel Safari. Price: Adults, $ 18; children 2 to 12, $15; children younger than 2, free. The Franklin Institute The Franklin Institute is Philadelphia's major science museum, and one of the oldest in the United States. The museum offers guests the chance to experience flight simulator and sky bikes. The first floor offers a large Kid Science exhibit, where children discover science through a fictional journey. The second floor features air shows. Price: Adults, $ 12; children 4 to 11, $12.
Answer: visitors can learn about exhibits using pre-recorded voice introductions

A:
One of the features of the Philadelphia Museum of Art is that _ .
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