由于180°=π rad,∴1°=π180 rad,∴36°=36×π180=π5 rad,
故选A.
15. An awful crash between an express train and a bus _____ , however, occur the other day in Russia.
A. does B. did D. has to D. had to
清朝长期实行闭关锁国政策。这一政策不仅阻碍了中国海外市场的开拓,也使中国进一步失去了走向工业文明的契机。对“闭关锁国”政策的准确理解是( )。
A.禁绝一切海外贸易
B.严格限制海外贸易
C.禁绝一切对外交往
D.严格限制与英国交往