根据句意及母或汉语提示完成下列句子。

1. Everything is u          __ to me, for I come here for the first time.

2.A c______   of reporters were waiting for Liu Xiang at the airport.

3. The westerners often eat with a k        ___ , a fork and a spoon.

4.I am_______(逐渐) getting used to things now.

5. They did an       ____(试验) on some mice to test the new drug.

阴离子间隙是判断何种酸碱平衡紊乱的指标（）

A.代谢性碱中毒

B.代谢性酸中毒

C.呼吸性酸中毒

D.呼吸性碱中毒

E.代偿性呼吸性碱中毒