用所给词的适当形式填空。

1. That______ (sound) boring.

2. Tom______ (play) soccer every day.

3. Kate______ (do) like sports. She thinks it's boring.

4. I have five______ (baseball).

5. Where______ (be) the football and the volleyball?

吗啡急性中毒致死的主要原因是（）

A.大脑皮层深度抑制

B.延髓过度兴奋后功能紊乱

C.血压过低

D.心跳骤停

E.呼吸麻痹