Although Fleming discovered Penicillin, it was over a decade ______ someone else turned it into the great drug of the 20th century.
#92265
A
before
B
since
C
when
D
as
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(2009宁夏银川模拟) In an experiment, pet owners are being encouraged to take their pets to work, a move _______ can be good for both the people and the pets.
#95057
A
that some scientists say
B
in which some scientists say
C
some scientists say that
D
some scientists say
—You look unhappy， my son?—I’m wondering how long it’ll be we come to China again.
#92681
A
since
B
when
C
before
D
after
Will future scientific discoveries ______ for us to live a much longer life?
#92064
A
be made possible
B
make possible
C
make it possible
D
be made it possible
The girl who is studying at the art college has a_______ for music and dance.
#92395
A
gift
B
present
C
power
D
strength