Variation is not constant; it is diffe

1、It is not advisable to use nylon for a

It is not advisable to use nylon for alongside towing because it（）.Ais too expensive for everyday towing usageBbinds on the cleatsCparts too readilyDstrethes too much

2、It is not surprising if in these condi

It is not surprising if in these conditions people behave aggressively towards each other；it is impossible for them to behave（）AotherwiseBlikelyClikewiseDalike

3、It is not always easy to tell the righ

It is not always easy to tell the right（）the wrong.AfromBwithCthanDto

4、It is generally NOT allowed to clean u

It is generally NOT allowed to clean up an oil spill by using（）.Aa boomBsuction equipmentCchemical agentsDskimmer

5、This story is not real; it is only（）

This story is not real; it is only（）AimaginaryBimaginativeCimaginableDimagined

6、It is not until you have lost your hea

It is not until you have lost your health（）you know its value.AuntilBwhenCwhatDthat