群体交往
参考答案：是指个人与个人之间的相互作用及相互影响的活动方式。
句型转换。
1. My father works on a farm. (变一般疑问句)
_____ your father _____ on a farm?
2. What do you think of the yellow dress? (改成同义句)
_____ do you _____ the yellow dress?
3. His mother is a nurse. (加doctor构成选择疑问句)
_____ his mother a nurse _____ a doctor?
4. It is 9:30 now. (就划线部分提问)
_____ _____ is it now?
5. She doesn't have any pears. (变肯定句)
She ______ _____ pears.
6. We play volleyball. (改为以Let开头的句子)
______ ______ volleyball.
7. Can I help you? (改成同义句)
What ______ I ______ _____ you?
输尿管轻度或中度扩张和（或）扭曲，肾盂轻度或中度扩张，但无（或）有轻度穹隆变钝，这是国际返流研究委员会提议的分级标准的第几级？（）
A.I
B.II
C.III
D.IV
E.V
