阅读短文，判断下列句子正(T)误(F)。
Li Ming is packing his suitcase, because he is going to have a trip. But he can't find the key and he can't
unlock his suitcase. He is worried (着急的). Jenny is his friend. Jenny wants to help him. " Is this your key?
It's under the bed." Jenny asks. " Yes, it's the key! Thank you! Let's unlock my suitcase." Li Ming says. " Here
is a teddy bear. But it is not mine! Whose teddy bear is it? " Jenny says, " It's not mine. It's Danny's! "
( ) 1. Li Ming is going on a trip.
( ) 2. Jenny can't find the key.
( ) 3. The key is under the bed.
( ) 4. There is a toy bear.
( ) 5. Jenny's teddy bear is in the suitcase.
2NH3(g)，下列说法中，能说明该反应已经达到化学平衡状态的是