题目内容

添加剂预混合饲料在配合饲料中的添加比例通常为

A. 1%-2%
B. 0.01%-5%
C. 3%-7%
D. 10%-20%

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The guest are staying at the hotel.

A. 对
B. 错

Why will the guest's friends be late?Because of a heavy _____________________.

What is the guest's last name?

How many are there in their party?

A. 6
B. 7
C. 8
D. 9