Look at this! I＿＿some magazines and _____ this letter.

A．was looking through； found

B．am looking through； find

C．looked through； had found

D．had looked through； finding

猪上脑肉位于（）的上方，颈骨的处部，通脊的前部

A.肩胛骨

B.锁骨

C.扇骨

D.肉颈椎骨