A:各自具体的性状
B:全部的染色体
C:所有的基因
D:每对染色体中的一条染色体
(____)He wants to play baseball.
(____)Tim was so happy because he got a gift.
(____)Why are you wearing a Tshirt?
(____)I am going to the cinema tomorrow.
(____)It's difficult to fly a kite.
在家中,父母与我们之间容易发生矛盾,甚至冲突。出现这种情况时,下列做法正确的是( )