—What's this?

—________ a rose.

[ ]

A. They are

B. They is

C. It's

D. That's

周期性麻痹需与下列哪些疾病鉴别（）

A.脊髓灰质炎

B.急性炎性脱髓鞘性神经根神经病（吉兰-巴雷综合征）

C.急性脊髓炎

D.全身型重症肌无力

E.运动神经元病