(2013·天津，12)At our factory there are a few machines similar to ________ described in this magazine.
#11614
A
them
B
these
C
those
D
ones
推荐题目
—Will you be ______ this evening, Mary?—That depends. I am afraid I will be with my manager discussing a plan.
#11903
A
demanding
B
suitable
C
available
D
efficient
He is always ready to help others. That's one of his ________ .
#10563
A
strengths
B
powers
C
abilities
D
benefits
The hotline_________ be very busy，but keep trying and you’ll get through．
#11656
A
should
B
must
C
can
D
would
Carbon dioxide, which makes a ______ between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer.
#13856
A
difference
B
comparison
C
connection
D
barrier
Parks are _____ of the few places where people in cities may have sports.
#14483
A
one
B
first
C
none
D
those