问题
阅读理解
He lookedsadly as his father didn't allow him to go to the cinema.
A B C D
答案
B sadly--- sad
look为相连系动词，后接形容词。
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He lookedsadly as his father didn't allow him to go to the cinema.
A B C D
B sadly--- sad
look为相连系动词，后接形容词。
CH3OH(g)＋H2O(g)；△H＝－49.0kJ/mol测得CO2和CH3OH(g)的浓度随时间变化如图所示。