Go straight and you will see the school _____ your left. [ ]
A. at
B. on
C. in
D. for
答案:B
“采菊东篱下,悠然见南山.”出自_______.
A.欧阳修
B.陶渊明
C.李贺
D.李清照
酸雨观测的常用化学试剂包括().
A.HCL
B.NACL
C.KCL
D.KHC8H4O4