题干
Both Kate and I ________ ready for the new high school life.
A：am
B：is
C：are
D：be
答案(点此获取答案解析）
C
Both Kate and I ________ ready for the new high school life.
A：am
B：is
C：are
D：be
4Y(g)+Z(g)，△H<0，在某温度时X的浓度随时间变化的曲线，下列有关该反应的描述正确的是