一氧化碳中毒最可靠的诊断依据是
A．一氧化碳接触史
B．昏迷
C．皮肤黏膜呈樱桃红色
D．血中COHb阳性
E．排除其他中毒
参考答案：D
—Anna, here's a book. I hope it will help you.
—Thank you. It's _______ what I need. [ ]
A. just
B. still
C. only
D. almost
下列不属于早成鸟的是（ ）
A．鸡
B．鸭
C．鹅
D．鹰
