吗啡急性中毒引起的呼吸抑制，首选的中枢兴奋药是（）。
A.尼可刹米
B.氯酯醒
C.甲氯芬酯
D.哌醋甲酯
E.甲弗林
参考答案：A
to visit
补全对话。
A: It's warm today. 1_____
B: Great!
A: Where are my shoes?
B: Come on. 2_____
A: Wait. 3_____
B: Oh, 4_____
A: 5_____
B: Sorry.
a. It's time to go.
b. Those are my shoes.
c. Let's play football.
d. They are on your feet.
e. Where are they?
