1 . The man waiting for the interview is the same man ______ I talked to in the elevator. Look, he is wearing the same hat ______ I’m wearing now.

A．that; as

B．as; that

C．as; which

D．who; as

2 . Teenagers confront such significant changes in the prefrontal cortex (前额皮质) ________ impact their behavior and emotions.

A．as

B．that

C．which

D．whose