过氯酸钾释放试验的诊断标准是释放率以多少为明显障碍（）。 A.

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问题单项选择题

过氯酸钾释放试验的诊断标准是释放率以多少为明显障碍（）。

A.释放率>20%

B.释放率>40%

C.释放率>50%

D.释放率<40%

E.释放率<50%

答案

参考答案：C

听力题

小题1:We had a lot of fun _______ (sing) in the classroom.

小题2:She decided ________ (buy) the red dress.

小题3:This sound made the baby ________ (cry).

小题4:Most boys enjoy _______ (play) football after school.

小题5:The shop is always ______ (crowd) on weekends.

小题6: Would you like _____ (go) shopping with me?

小题7:I saw a little girl ______ (look) for her parents on the street when I walked across it.

小题8:______ (be) you at the shop last Friday?

小题9:The boy spends a lot of time ________ (practice) the piano in the room.

小题10:Look! Who _______ (stand) near the door?

填空题

公共政策要体现政府信用，最为根本的是其（）。