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【单选题】
“推荐分级的评价、制定与评估”( Grading of Recommendations Assessment, Development and Evaluation , GRADE )工作组那一年成立?( )A.
2000
B.
2001
C.
2002
D.
2003
E.
2004
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举一反三
【简答题】The Stanford Cart, which was tested in 1979, was one of the earliest examples of a(n) ___________________.
【单选题】听力原文：M: Excuse me, cart you tell me where the bookstore is? W: Yes. They are just down this street on the left side. Q: What does the man want to do? (3)
A.
Make a call.
B.
Have a rest.
C.
Buy a book.
D.
Look for something.
【简答题】It took the Stanford Cart ___________ to cross a chair-filled room without human’s help.
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