单项选择题
A．can B．would C．may D．shall
A．unavailable to the importing countries B．unavailable to the exporting countries C．not suitable to the developing countries D．keeping back the exporting countries’ economy
A．stock markets are not the safest place to make money B．the factory or the company may do badly C．the stock may go up or down for a number of untold reasons D．sometimes even if a factory or company does a good job, the stock may still go down