— I _______ an English-Chinese dictionary.
—When _______ you _______ it?
A:have bought; did; buy
B:buy; do; buy
C:have bought; will; buy
D:buy; have; buy
反应时间/min
n(SO2)/mol
n(O2)/mol
0
0.10
0.060
t1
0.012
t2
0.016
____
下列有关孟买的叙述正确的是( )
下列远古人类,从其进化状况看,排列正确的是( )