The vehicle was traveling at speeds ________ 90 miles per hour.

对我国来说，外汇的作用主要是()。

The farming methods have been ________ improved with the invention of the new machine.

具有透支功能的银行卡是()。

Fish is ________ and expensive at this time of the year in this area.

在期货交易中，我国现行的最低保证金比率为交易金额的()。

Since we have a focused subject ，we should not talk ________.

期货合约上市商品具有的特征是()。

Please write a report _______ the above subjects are to be covered.

在我国，按照证监会的有关规定， 60%以上的基金资产投资于股票的，为()。