问题
单项选择题
73001次是（）列车。
A.军用
B.路用
C.自备车
D.保温
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
73001次是（）列车。
A.军用
B.路用
C.自备车
D.保温
参考答案：D
Passage Three
Cheap protein substitutes from milk, eggs and meat ______.
A．may be obtained from vitamin and minerals
B．are being sought by scientists
C．can be gotten from soybeans
D．can be found in iodized salt