It’s said that this kind of plant only gives off this strange perfume on ________ conditions which the scientists are trying to figure out now.
#10953
A
outstanding
B
certain
C
obvious
D
ordinary
推荐题目
Mary is really good at taking notes in class. She can _______ almost every word her teacher says.
#12484
A
put out
B
put down
C
put away
D
put together
That hero who died in the war was so brave that he never ____ ____ to the enemies until death.
#12180
A
gave up
B
gave out
C
gave in
D
gave away
Paper bags produced every year are ____ the world’s production of vehicles.
#14069
A
three times weight of
B
three times the weight of
C
as three times heavy as
D
three times as heavier as
Malaysia Airlines Flight MH370 seemed to have been ______ to only a mystery after so long and hopeless a search．
#10761
A
reduced
B
formed
C
trapped
D
absorbed