The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.
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A
to be invented
B
having been invented
C
invented
D
to have been invented
推荐题目
Jack, I’m afraid I’ll turn to you．I think chemistry is _______ physics．
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A
as a difficult subject as
B
a subject the same difficult as
C
as difficult a subject as
D
the same difficult subject as
Who would you rather ______ the report instead of you？
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A
have write
B
have to write
C
write
D
have written
______ Marx's works with Engels', and you'll find many differences．
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A
Comparing
B
Compare
C
To compare
D
If you compare
I don’t think there will be many students left in the class，_______，because the conditions are not fit for studying.
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A
if any
B
if possible
C
if ever
D
if so
When he was a little boy，he ______ on the farm.
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A
used to working
B
used to work
C
got used to work
D
was used to work