沸腾钢与镇静钢相比，其时效敏感性_________。
参考答案：高（或大）
选词填空。
1. It's ______(rainy/rain) today.
2. London is _______(windy/wind) today.
3. It's ________(snow/snowy) in Beijing today.
4. It's _________(cloudy/cloud) in Lhasa today.
5. It's ________ (sun/sunny) in Harbin today.
6. It's ________(hot/hat) today.
A．液化现象
B．凝固现象
C．升华现象
D．凝华现象
