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Questions are based on the following pas...

Questions are based on the following passage.

1.

A.To find out what happened to the atmosphere and water of our planet.

B.To explore what occurred to the natural environment on Mars.

C.To confirm that Mars has a much thicker atmosphere now.

D.To have access to an orbit to circle around the Red Planet.

2.

A.Robots that can operate on batteries.

B.Robots that are less expensive to build.

C.Robots that can run quickly on four legs.

D.Robots that have greater load capacity.

3.

A.Its influence on U.S. movies and TV shows.

B.Its tough demands on overseas students.

C.Its attempt to spread American culture.

D.Its exclusion of American values.

 

1.B 2.D 3.C 【解析】 【原文】 This is Radiolab. Here are the short news items. In September, the U.S. scientific satellite MAVEN entered an orbit around Mars, with the mission of learning what happened on the Red Planet’s atmosphere and water. MAVEN’s principal investigator Bruce Jakosky says scientists now know that Mars once had a much denser atmosphere and that it has changed significantly over the last few billion years. What they still don’t know is how and why that happened. Scientists have been experimenting with four-legged robots for years, trying to see if they could be used as pack animals for carrying heavy loads over a difficult terrain. But the machine’s power requirements limited their potential. That’s changed, with a running robot designed by a group of engineers at Massachusetts Institute of Technology that operates on batteries rather than heavy gasoline-powered engines. People often blame Hollywood movies, U.S. television shows and fast food for spreading American culture around the world. But a college entrance exam? Some people are criticizing planned changes to the Scholastic Aptitude Test, or SAT, as an attempt to spread American values to students overseas. Since 2016, the SAT has required test-takers to read from parts of the U.S. Constitution, the Declaration of Independence or other historical documents. Questions: Why was scientific satellite MAVEN sent to space? What is scientists’ latest research on robots? What is the SAT accused of?
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3.

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