期货交易
参考答案：
是指证券交易双方在签订的证券期货合约中约定，在该契约规定的日期以约定的价格进行清算交割的证券交易方式。
导弹按射程如何分类？
—Tom has made great progress this term.
— , and .
A．So he has, so you have
B．So he has, so have you
C．So has he, so have you
D．So has he, so you have
