Questions and exercises are given by the computer, which decides ______ to move the students ahead, review an easier level, ____ give more work on the same level.
#80118
A
either, or
B
both, and .
C
whether, or
D
not only, but also
推荐题目
In some countries, ____ is called "equality" does not really mean equal rights for all people.
#31261
A
which
B
that
C
what
D
one
Our attitude towards life is________makes the difference between our being happy or not.
#31045
A
that
B
whether
C
what
D
which
She is _____ careful girl ______ she hardly makes mistakes in the exam.
#33861
A
so, that
B
such, that
C
a such, that
D
such a, that
(2012·四川)Scientists study ________ human brains work to make computers.
#30462
A
when
B
how
C
that
D
whether
