It is clear that many institutional investors onc

Once environmental damage, it takes many years for the system to recover.A．had doneB．is do

It is clear from this selection that bilateral symmetryA．is the balance from top to bottom

If the countrys investment rating is "junk", it means that investors may______.A．not get h

It was clear to everyone that my father indulged （) the do－it－yourself game.A、／B、onC、f

It is clear that a（n)_____ student can understand it.A.ordinaryB.generalC.usualD.average

Once environmental damage it takes many years for the system to recover.A.had doneB.is do