This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
#33175
A
a
B
an
C
the
D
/
推荐题目
Simon usually plays_______ guitar on Sunday morning and plays_______ chess on Sunday afternoon.
#33446
A
the; the
B
the; ／
C
／;the
D
/:／
–Who is ___ boy in a red cap? --He is Tom. He is good at playing ____ basketball.
#33016
A
the, /
B
the, the
C
a, a
D
a, /
— Why did you laugh just now？— Ted wanted to tell us ______ very funny story, but he forgot ______ ending himself.
#32087
A
a; an
B
the; the
C
the; a
D
a; the