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【简答题】
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刷刷题刷刷变学霸
举一反三
【单选题】What do we know now because of Leavitt’s work?
A.
All stars are really bright.
B.
The universe is really big.
C.
There are millions of stars.
【单选题】Leavitt got a job at _____.
A.
Yale University
B.
the University of Massachusetts
C.
the University of California
D.
Harvard University
【单选题】Leavitt went to school at ____.
A.
Radcliffe College
B.
the University of Massachusetts
C.
the University of California
D.
Harvard University
【单选题】Leavitt studied _____ of stars.
A.
the distance
B.
the brightness
C.
the size
D.
the length