Many scientists have believed that there may be a _________of life on the Mar．
#5631
A
mark
B
signal
C
sigh
D
sign
推荐题目
After dinner the minister made a short _____ to the guests.
#7567
A
delivery
B
pronunciation
C
conversation
D
speech
--- How can I use iPhone 4S ?--- Just refer to the _______.
#5424
A
expressions
B
explanations
C
preparations
D
directions
The most important _____ of his speech at the G20 summit was that we should all unite to fight against the finanical.
#7574
A
element
B
spot
C
view
D
point