Aiming to retrieve the Mars rover Opportunity, engineers are imitating Mars surface conditions in a testing laboratory.
A.copying
B.mocking
C.simulating
D.pretending
Some children display an unacceptable curiosity about every new thing they encounter.
A.incredible
B.infectious
C.incompatible
D.inaccessible
What is the best title for this passage?
A.Women's Power
B.An Unforgettable Experience
C.Tests Show Women Suited for Space Travel
D.Man Should Not Travel to Space Any More
A.$50.
B.$250.
C.$500.
D.$1,000.
It was in New York __ he was kidnapped (绑架) and killed.
A.that
B.which
C.where
D.who
Find the same meaning as "erase" in the last sentence of the first paragraph.
A.Add.
B.Change.
C.Remove.
D.Store.