The software is a popular tool in business, where it ______ and simplifies such procedures
A. puts on
B. puts forward
C. takes after
D. speeds up
设有如下关系表：
A. T=R∩S
B. T=R∪S
C. T=R×S
D. T=R/S
银行体系包括中央银行、商业银行、政策性银行和外资银行等。()
A. 正确
B. 错误
A．manyB．lotC．muchD．a lots
A. many
B. lot
C. much
D. a lots
微信支付 
支付宝支付