— Yes. Our teacher often tells us we can't be _______ careful while taking exams.
A:too
B:very
C:quite
D:so
观察如图,阴影部分表示图中四种植物的共同特征,这一特征是( )
t/℃
0
1
2
3
4
5
6
7
8
ρ/kg•m﹣3
999.84
999.90
1000.00
999.97
999.94
999.85