No one knows what time itself is.We cannot see it.We cannot touch it.We cannot hear it.We know it only by the way we mark its passing.For all our success in measuring the tiniest parts of time, time remains one of the great mysteries of the universe.
　　One way of thinking about time is to imagine a world without time.There could be no movement, because time and movement cannot be separated.A world without time could exist only as long as there were no changes.For time and change are linked.When something changes, you know time has passed.

[单选题]（）heavy commitments, we cannot accept any fresh orders.A .DueB .Owing toC .BecauseD .In addition to

[单选题]We cannot[ compel]you to do it,but we think you should.A.adviseB.commandC.e

[单选题]We cannot ignore the__________ of noise on people in the factories.A． effectB． resultC． volumeD． fact

[单选题]We cannot [go on]quarrelling like this.A.chooseB. prepareC. continueD. advi

[单选题]We cannot [go on]quarrelling like this.A.chooseB. prepareC. continueD. advi

[单选题]We cannot [go on]quarrelling like this.A.chooseB. prepareC.continueD. advis

[单选题]（）heavy commitments，we cannot accept any fresh orders.A . DueB . Owing toC . BecauseD . Inaddition to

[单选题]We cannot comment on whether _____ international standards should be develo

[单选题]Sorry, we cannot _____you the job because you don’t have any work experienc

[主观题]We hear it said frequently that what present-day men most desire is security. If that is so，then they have a wrong notion of what the real，the ultimate security is. No one who is dependent on anything outside himself，upon money，power，fame or what not