Thomas Alva Edison didn’t “invent” the light bulb (灯泡), but rather he ______ a 50 –year –old idea, which is not well –known. 
#84032
A
improved upon
B
take down
C
put up
D
break away
推荐题目
Mike pretended ___ Chinese when I came into the classroom.
#81141
A
to reading
B
reading
C
to be reading
D
to be read
Last year, the advertising rate _____ by 20 percent.
#73429
A
raised
B
aroused
C
arose
D
rose
After listening to the joke, one minute she burst out _________ and the next she burst into_________.
#71318
A
laugh; tears
B
laughing; crying
C
laughing; tears
D
laughter; tears
 My classmates insisted that I ________ the school field trip to Jilin.
#74592
A
organized
B
would organize
C
organize
D
had organize