IgA肾病起病前最常见的感染为（）。
A.颅脑感染
B.上呼吸道感染
C.消化道感染
D.肺部感染
E.泌 * * 感染
参考答案：B
根据句意和首字母提示完成单词。
1. My brother couldn't r_______ a boat when he was six.
2. Jane is a s________ girl. She's very good at her subjects.
3. Three p_______ four is seven.
4. Wen Yong is good at making m_______ planes.
5. Tom did it y_______, not today.
PQFP封装一般为（）。
A、长方形
B、正方形
C、凌形
D、三角形
