下列关于结构式叙述法，说法不正确的是（）
A.该方法简便易行
B.无需被考评者的参与
C.工作分析不到位
D.绩效考评标准不明确
参考答案：B
用过去式改写下列句子。
1. Mike reads newspapers everyday.
Mike yesterday.
2. I buy presents for my mother.
I for my mother.
3. We see flowers in the park on Saturday.
We in the park on Saturday.
4. They learn folk dances from the girls.
They from the girls.
甲、乙两个圆柱形容器，底面积比为6：3，甲容器水深20厘米，乙容器水深10厘米，再往两个容器中注入同样多的水，使得两个容器中的水深相等，这时水深______厘米．
