As we all know ,Columbus America and Edison light bulbs.
#53582
A
discovered ; invented
B
invented ; discovered
C
discovered ; discovered
D
invented ; invented
推荐题目
She has __________ close friends so that she really doesn’t know __________.
#52347
A
many; who to talk
B
few; who to talk to
C
much; what to do
D
little; how to do
--What a beautiful bike! How long have you _______it? --My mother just______ it for me as my graduation gift yesterday. I like the colour, it’s so cool..
#53060
A
bought ,bought
B
had, bought
C
buy, send
D
had, sent
---Why do you like watching the news? ---Because I hope to ______ what’s going on around the world.
#56004
A
find
B
find out
C
look
D
learning