留置导尿管超过3d后，菌尿的发生率是
A．30%
B．50%
C．60%
D．80%
E．90%
参考答案：E
看图，判断句子对(√)错(×)。
( ) 1. I like fruit.
( ) 2. I do my homework in the afternoon.
( ) 3. Whose dress is this?
( ) 4. Let's play ping-pong.
清洁生产的指标？
I like fruit. 
I do my homework in the afternoon.
Whose dress is this?
Let's play ping-pong.