In France, a bookstore chain has put a special camera in its shops. The system feeds a video stream to software which_______shoppers’ movements and facial expressions for surprise, dissatisfaction, confusion or hesitation. When a shopper walks to the end of an aisle（货架通道） only to_______with a frown to a particular bookshelf, the software messages_______, who then go to help. For the eight months leading up to this April, sales rose_______a tenth.

The bookseller wants to keep its name_______for now. Similarly，other French clients of the Paris startup behind the technology, Angus.ai, are_______it in stores which are not open to the public. They_______ airport owner Aéroports de Paris, the luxury-goods giant LVMH, and Carrefour, the supermarkets chain.

Simple video produces a lot of insights, but there are far more complicated ways of learning about shoppers’_______. Thermal-imaging (热成像的) cameras_______detect heart rates. Wirelessly collected data from smartphone accelerometers (加速度传感器) can suggest when shoppers become fascinated (movement stops) or are unhappy about________(a phone is raised to search for cheaper products online). For even more insights, shoppers are sometimes asked to put on special equipment, typically in exchange for a ________or reward of another kind.

All of this could be a(n)________, some say, for sellers to enjoy the advantage that big data has long given online sellers. A race is________to work out how best to________and use emotional data, thus improving packaging, displays, music, or the content and timing of persuading customers into buying goods.

Using technology is much less________than old-fashioned interviewing. Nielson, a consumer-research giant, charges around $10,000 to interview 25 shoppers about three products. Angus. ai’ s service costs just $66 a month per camera. Sometimes,________market surveys may ask the wrong questions. What’s more, they can give misleading________. People typically change their responses intentionally to make themselves sound sensible,________purchases are often driven by subconscious (潜意识的) emotions.

One obvious________of shopping’s emotional side is the idea of “retail therapy” — consumers driven to spend when they are feeling blue. Whichever store is the first to spot mildly________customers could make a fortune!

Chinese volunteers have completed a one-year test living in a simulated（模拟的）space lab in Beijing. The total length of the test, which started on May 10th last year, ____ 370 days, thus setting a new record for the ____ stay in a simulated space lab.

The space lab, called the Yuegong-1, or Lunar Palace 1, measures around 150 square meters. It ____ four sleeping rooms, a bathroom, a waste-treatment room and a room for raising animals. The Yuegong-1 provides everything humans need to survive in an environment ____ to that of a space station in outer space. Oxygen, water and food are ____ within it.

A total of eight ____, all of whom are students at Beihang University, took turns ____ in the space lab. They were divided into ____ groups. On May 10, 2017, two men and two women ____ the Yuegong-1 for an initial （最初的）stay of 60 days. On July 9, they were ____ by another group of four, who stayed 200 days. The second group of students ____ on January 26, 2018, and the initial group ____ and spent 110 days inside it.

___, the volunteers were expected to stay in the Yuegong-1 for 365 days. But the project ended up ____ 370 days —from May 10 last year until May 15. The ____ five days were designed as a way to simulate a（n）____, in which the spaceship might experience a ____ in returning to earth.

The goal of the project “Yuegong 365” is to ____ the limits of humans’ ability to live in a ____ ecosystem for China’s manned moon landing ambition. The success of the project means that China goes one step closer to putting ____ on the moon.

The International Space Station (ISS) is a huge space station. It is being _________ by thousands of people from 16 countries. All these people are trying to find out if humans can one day build _________ in space.

Floating 230 miles above Earth, the International Space Station currently _________ huge building-block project out in space. US space shuttles and Russian rockets have been _________ tools and pieces of the _________ into space to help finish building it. From the beginning of its construction in 1998 to its _________ more than 100 major pieces will be put together to create this amazing space station. When _________, it will be the largest structure ever to fly above Earth. The ISS will be larger than a football field and will weigh about one million pounds.

In addition to helping build the space station, _________ are trying to answer such questions as these: How does space travel affect germs? Does the human body break down food _________ in space? Someday, the station may even serve as a launchpad (发射台) for trips to other __________, such as Mars. Because of its impressive size, the ISS needs a lot of __________. Like other man-made bodies in space, its power comes from the sun. To create solar, energy, large panels (嵌板) are lined with special materials. These materials __________ the sun’s energy and change it into electricity.

So what does it cost to build such a __________ ? It costs over $ 60 billion dollars. __________ this may seem astronomical, it may be a small price to pay for a project that enables some of the world’s finest scientists to work together, exploring space for the world‘s __________.