研究发现结合态IAA含量与可育度平行下降,而不育花药中的和的活性则随着不育度的加深而提高几倍以至几十倍。

A)The job is suitable for him.
B)The job is easy to do.
C)The job is interesting.
D)The job is well paid.

A)Mary doesn't know where the copy room is.
B)Mary doesn't know how to make copies.
C)The man is interviewing Mary.
D) The man wants to talk to Mary.

A) Job opportunities.
B)The meeting schedule.
C)Flights to London.
D)The hotel location.