比1小2的数是( )
A.-3
B.-1
C.1
D.3
答案:B
∵1-2=-1,∴比1小2的数是-1.故选B.
Paper making began in China and from there it _____ to North Africa and Europe.
A.sprang
B.spilled
C.carried
D.spread
痫证频繁发作时,其治法应重在()
A.豁痰息风
B.健脾化痰
C.开窍定痫
D.补肝益脾
E.养心安神