企业花费人力物力对新进大学生进行培养，培养的周期大约在（）。
A、半年到一年
B、一年到一年半
C、一年半到两年
D、两年到两年半
参考答案：A
建筑火灾的蔓延途径有哪些？
Others argue that since the earth has endured a long string of ice ages in the last two million to three million years, any warming is（）to be temporary.
A.seemed
B.likely
C.tended
D.possible
