跳远助跑一般设两个标志，第一标志在（）处，第二标志在（）处。
参考答案：起点、倒数6－8步
根据汉语提示填入单词的适当形式。
1. Robert enjoys _____ (收集) stamps. And now he has 300 of them.
2. She will be the _____ (第五个) to speak at the meeting.
3. I am really sorry I was late. I just _____ (错过) the early bus this morning.
4. Nancy is _____ (在楼下). Go and find her yourself.
单纯性肾病的临床表现，不正确的是（）。
A.全身水肿
B.大量蛋白尿
C.低白蛋白血症
D.肉眼血尿
E.高胆固醇血症
