— Well, he is forty-five years old. But _____ can't tell his true age from his looks.
A:in; anyone
B:on; anyone
C:in, someone
D:on; someone
【收集资料】通过阅读标签及查阅资料,她获得如下信息:
①该固体酒精中含有酒精、氢氧化钠等物质.
②酒精的化学式为C2H5OH
【提出问题】
时间/min
…
12
13
14
15
16
17
18
温度/℃
96
97
98
95
(从上到下依次填写)