资本市场是融通长期资金的市场，它又可以进一步分为（）。

A．股票市场和债券市场 

B．证券市场和货币市场 

C．短期资金市场和长期资金市场 

D．中长期信贷市场和证券市场

Rapid application development (RAD) systems purport to lighten the developer’s (46) by making it easy to program an application with simple intuitive steps.
RAD tools (47) the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to (48) changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application’s real usefulness (49) , the developer armed with RAD tools should be able to (50) on new features with little fuss.

A．burden

B．trouble

C．task

D．weight