TASK DEFINITION: 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.
PROBLEM: Article: 14 days from just PS2,090 pp Fully inclusive from the UK Price covers, international airfares, departure taxes, fuel charge, local transportation all meals, entrance fees, guides, daily tours and visas for UK citizens. * Days 1-3: UK-Shanghai Fly to the great city of shanghai and in the evening _ traditional shanghai food. Visit the beautiful Yu Garden, Old Town. Shanghai Museum, cross the Grest Nanpu Bridge and tour the Pudong area. Also explore Xintiandi with its 1920's style Shikomen buildings and end your stay in Shanghai with an amazing Huangpu River evening tour. * Days 4-7: Shanghai-Yangtze River Tour Fly to Yichang and change(approx: one hour)to board your Yangtze River ship for the next four nights. Enjoy a tour of the three Gorges Dam before sailing on the grand Yangtze River, passing through the impressive Three Gorges. We take a side trip to the Lesser Three Gorges or travel up the Shennong Stream in a peapod boat and enjoy various shore trips along the way. * Day 8: Chongqing--Chengdu Get off in Chongqing and drive to Chengdu for an overnight stay. * Day 9-10: Chengdu-Xi'an Visit the famous Panda Reserve to see the lovely animals. We then fly to the historic city of Xi'an for two nights, stay and enjoy traditional Shuijiao. Next day, explore one of the most important discoveries of the 20th century--the Terracotta Warriors ,followed by the ancient City Wall and a performance of Tang Dynasty dancing. * Day11-13: Xi'an-Beijing Visit little wild Goose Pagoda and see the ancient objects at the well-known Shanxi Provincial Museum before walking through the lively Muslim Quarter to see the Great Mosque. Later fly to Beijing for three nights' stay and try Peking Duck. During our stay in Beijing, we stroll through Tian'anmen Square to the Forbidden city, the largest and best preserved collection of ancient buildings in China, and visit the summer palace. Next day we take a walk on the Great wall, tour the unique Temple of Heaven and enjoy an attractive Chinese Acrobatic Show. * Day 14: Beijing-UK Fly back to the UK, arriving home later the same day filled with happy memories.
Answer: the Terracotta Warriors and the Great Mosque

SOLUTION: The first and last scenic spots he visited in Xi'an are _ .

PROBLEM: Article: If you could leave a farewell video for your loved ones that they'd see only if you died, would you do it? I think I would. I read about an app that helps people create a video to be published on a social-networking site only after death. Of course you don't need an app since it's easy to make your own video with smartphones, laptops and computers. But how many people do you know who would actually go ahead and leave "If I die" footage ? My father died unexpectedly on Christmas Eve three years ago and I've since longed for one more time to talk to him and hear his voice. Imagine if he had left such a video. I would see him again, hear his laughter and benefit from his parting words and advice. I don't think people, unless they have a terminal illness, go through life thinking they'd better leave a video in case of an _ death. But it is an opportunity to say all the things you want to say before it's too late. Still, some say that such a video robs loved ones of their own memories of you. Any special images they have would be superimposed by the video image you've created. Others think it's scaring and might be tempting fate. I expect my video would consist of reminders to my children: Be safe; be[:++Z+X+X+K]mindful of your surroundings; exercise good judgment; speak up; it never hurts to ask; don't waste time and "call when you get there". And in addition, I would repeat what I always tell them: I need to know where you are, every-step-of-the-way. That would make them laugh. Readers, would you find comfort in knowing you've said your farewells and left something concrete for your loved ones? What messages would you leave for family and friends?
Answer: how he was inspired to get the idea of creating a video before death

SOLUTION: The writer mentions the app to show _ .

PROBLEM: Article: US researchers have found traces of an ancient lake on Mars recently, increasing hopes of discovering evidence that billions of years ago the Red planet hosted life. The lake, which dates back some 3.4 billion years, appears to have covered as much as 80 square miles and was up to 1,500 feet deep, said the team from the University of Colorado. "This is the first clear evidence of shorelines on the surface of Mars," said Boulder's research associate, Gaetano Di Achille, in a study published in the latest edition of Geophysical Research Letters. "The identification of the shorelines and accompanying geological evidence allows us to calculate the size and volume of the lake, which appears to have formed about 3.4 billion years ago."[:] Analysis of the images has shown the water carved out the canyon in which it was found, which then opened out into a valley depositing sediment which formed a delta . "Finding shorelines is a great discovery to us," said assistant professor Brian Hynek, adding it showed the lake existed at a time when Mars was thought to have been cold and dry. Scientists believe the oldest surfaces on Mars formed during the wet and warm era known as the Noachan epoch, about 4.1 billion to 3.7 billion years ago. The newly discovered lake is believed to date from the Hesperian era and postdates the end of the warm and wet period on Mars by 300 million years, according to the study. Scientists believe deltas next to the lake may well hold secrets about past life on Mars as such places on Earth have become the natural deposits of organic carbon and other markers of life.
Answer: 80 square miles

SOLUTION:
The size of the lake found on mars is _ .