从投资者的角度来看，( )特性使资金具有时间价值。A．投资的增值 B．资本的增值

写出画线词的反义词。

1.  This is a tennis ball. _____ is a tennis racket.

2.  These arc boys. _____ are girls.

3.  Playing computer games is interesting. Watching TV is_____.

4.  He has a _____ sports collection, and I have a small one.

5. _____  name is Jack, and her name is Anna.

If you love what you are doing and work hard, you will ______ anything difficult and succeed.[     ]

A. get to

B. get over    

C. get on        

D. get up

在数字通信中发送端和接收端必需以某种方式保持同步。（）

企业盘盈的固定资产应该通过“待处理财产损溢”科目核算。( )

在工程热力学中，lmol气体有（）气体分子。

A、6.23×10²³个

B、6.0225×10²³个

C、6.01×10²³个

D、6.011×10²³个