题干
a reward of $1,000 will be given to can provide any clues to the case which has been investigated by the police for nearly half a year.
A：whoever
B：whomever
C：anyone
D：who
答案(点此获取答案解析）
A
CO2+H2在800℃达到平衡时分别改变下列条件，K值发生变化的是（ ）