某课外实验小组设计的下列实验合理的是（ ）
A：比较非金属性强弱Cl＞C＞Si
B：制备少量氨气
C：实验室制氯气
D：实验室制二氧化碳
Meyer and his team were the first ______ how the disease spreads from animals to humans.
