— Your classroom looks bright and tidy.

— It        after school every day.

A．cleans

B．cleaned

C．is cleaned

D．was cleaned

腹性过敏紫癜又称

A．Vascular purpura
B．allergic purpum
C．Henoch 紫癜
D．schonlein 紫癜
E．Henoch-Schonlein 紫癜