选出你所听到的词语（ ）
A：study
B：short
C：second
给下列句子选择正确的答语
____Is he drinking water? A. Yes, they are.
____Can you take him to the park? B. No, he isn't. He's eating.
____Whose book is this? C. He's in the kitchen.
____Are these all ours? D. It's Mike's.
____Where is Fido now? E. Of course.
在做“探究影响鼠妇分布的环境因素”的实验时，用的鼠妇数量最合适的是（ ）
