维生素B1缺乏可引起()
A.脚气病
B.佝偻病
C.坏血病
D.癞皮病
E.口角炎
参考答案:A
用下面的字组词语,看谁组得多。
城 桌 上 写 读 信 市 面 书
(读书) ( )( )
( )( )( )
. soldiers and doctors were sent to help the people in Yushu after the earthquake.
A. Two thousands B. Thousands of C. Two thousands of