（）an order for 100 pieces or more，we a

1、We drop a piece of metal into a jar fu

We drop a piece of metal into a jar full of water, the metal will float if it weighs less than______.A an equal amount of silverB an equal amount of goldC all the water in the jar nowD the water that leaves the jar

2、（）is a space system using one or more

（）is a space system using one or more artificial earth satellites.ASatellite networkBSatellite linkCGMDSSDSatellite system

3、（）an order for one thousand tons or mo

（）an order for one thousand tons or more we grant a special discount of 10%.AonBForCToDOn

4、Ships carrying 15 or more seafarers an

Ships carrying 15 or more seafarers and engaged in a voyage of more than three day’s duration shall provide separate hospital accommodation to...

5、（）is a space system using one or more

（）is a space system using one or more artificial earth satellites.Asatellite networkBSatellite LinkCINMARSATDSatellite System

6、A c（） sentence contains two or more cl

A c（） sentence contains two or more clauses， one of which is incorporated in the other.