题目内容
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A、Rich people
B、Poor people
C、Healthy people
D、Nobody
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A、to form a protective slag coating
B、to form a protective shielding gas
C、to help stabilize the arc
D、to prevent the weld deposit from becoming brittle
A、Stakeholders who conduct transactions with the organisation
B、Stakeholders who have a contractual relationship with the organisation
C、Stakeholders who do not have a contractual relationship with the organisation
D、Stakeholders who conduct transactions with the organisation
A、Non-smoking area
B、Smoking area
C、group-buying sites
D、window seat
| While only about 200 astronauts have had the excitement of looking down at Earth and commanding systems on the International Space Station, actually thousands of everyday middleschool students have experienced by Middle School Students, or EarthKAM, a camera system. EarthKAM is an educational activity and outreach(扩展)investigation that also results in remote Earth sensing and observation. Using the Internet, the students control a special digital camera fixed aboard the space station, enabling them to photograph the Earth's coastlines, mountain ranges and other geographic items of interest from the unique advantage point of space. While EarthKAM offers a powerful way for students to investigate Earth from the unique perspective of space, it is also inspiring the next generation of flight controllers for space programs—involving university students to control and operate the camera system and related activities from the ground. In the interview, Brion Au, one of the investigation developers at NASA's Johnson Space Centre, said，“EarthKAM is a payload(有效载荷)by students, for students. They are in charge. This system provides a viewpoint that the astronauts have...it's just aweinspiring！”So far, students have captured more than 40,000 photos of the Earth from the space station as it orbited the Earth once every 90 minutes, traveling at 17,500 miles an hour. The team at EarthKAM posts these photographs online for the public and participating classrooms around the world to view. Au explains that this education investigation is inspiring students to explore the world by examining Earth, while promoting social studies, art, geography, science, technology, and math, among other important lessons involving research and teamwork. EarthKAM was started by Dr. Sally Ride, originally flying on the shuttles. The camera is located in the window Observational Research Facility, also known as the WORF, one of many the station's research facilities. 小题1:How have thousands of students experienced similar excitement as astronauts？
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A、Ernest Hemingway
B、Jack London
C、Martin Luther King, Jr.
D、Friedrich Whilhem Nietzsche
A、William Dean Howells
B、Nathaniel Hawthorne
C、James Russell Lowell
D、Charles Eliot Norton
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