65-25=____
67-36=____
3+66=____
0.25除以0.15,当除到商1.6时,余数是( )
—They are on the bed.
周期/族
IA
0
1
1 H
1.008
ⅡA
ⅢA
ⅣA
ⅤA
ⅥA
ⅦA
2 He
4.003
2
3 Li
6.941
4 Be
9.012
①
6 C
12.01
7 N
14.01
8 O
16.00
9 F
19.00
10 Ne
20.81
3
②
12 Mg
24.31
13 Al
26.98
14 Si
28.09
15 P
30.97
16 S
32.06
③
18 Ar
39.95
把下列每种动物与其所属的类型配对.
1____ 2____ 3____ 4____ 5____