it is normal for parrots to talk, Einstein, a small bird, is unusual in that whenever she hears a new word or sound, she repeats it over and over until she masters it.
#30576
A
As
B
When
C
While
D
Since
推荐题目
It doesnt matter ________ you pay by cash or credit card in this store.
#30822
A
how
B
whether
C
what
D
why
Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster.
#30282
A
before
B
as
C
unless
D
in case
If you are able to talk to a friend over the telephone, you feel that you are close _____ the actual distance is not shortened.
#80352
A
even if
B
so long as
C
if
D
as
A warm thought suddenly came to me _______ I might substitute the hero to buy some flowers for his mother’s 60th birthday.
#33893
A
if
B
when
C
that
D
which