零担货物运输是指托运人一次托运质量不足多少的货物运输？（）
A.3t
B.4t
C.5t
参考答案：A
The advertising industry in today's world does have its share of responsibilities in leading people to misconceptions.
A．for leading people to
B．to lead people to
C．to lead people into
D．for leading people into
把100克80℃的热水与300克冷水混合，混合后得到35℃的温水，试求：
（1）热水放出的热量
（2）冷水吸收的热量
