根据首字母及句意补全单词

1. Her grandparents are very kind and l          .

2. Ann set a r____   for the l00-meter race in the sports meeting last week. 

3. She was b       in a quiet country. 

4. The kid was lost in the forest for two days. When we found him, he was still a_____.

5. When did she t            the U.S.?

(1)在没有现成的CO₂气体发生器的情况下，请你选用下图所示的部分仪器，装配成一个简易的、能随开随用，随关随停的CO₂气体发生装置，应用的仪器是（填入仪器的编号）____。

(2)若用上述装置制取CO₂气体，而实验室只有稀硫酸、浓硝酸、水、块状大理石，比较合理的方案应选用的药品是____。