三个SC问题，恳请指教GWD25－17，24，31

Q17

Until recently, the Inuit people led a nomadic existence, sheltering in

igloos, the ice-block domes that are peculiar to north-central Canada,

and in structures made of stones, bones, driftwood, and skins.

A.    Until recently, the Inuit people led a nomadic existence, sheltering

B.     During recent times, the Inuit people lead a nomadic existence,

sheltering.

C.     In the times that are recent, the Inuit people led a nomadic exis-

tence, sheltered.

D.    Up until recently, the Inuit people, leading a nomadic exis-

tence, have sheltered.

E.     Until recent times, leading a nomadic existence, the Inuit people

were sheltered.

答案是D,为什么不选A?

may reduce harvest rates, it will stimulate demand by increasing supply and

lowering prices, thereby boosting consumption.

A.    in converting harvested trees into wood products may reduce harvest

 rates, it will stimulate demand by increasing supply and lowering prices,

thereby boosting.

B.     In converting harvested trees into wood products may reduce harvest

rates, demand will be stimulated because of increasing supply and

lowering prices, which boost.

C.     Of converting harvested trees into wood products may reduce harvest

rates, it will stimulate demand by increasing supply and lowering prices,

which boosts.

D.    Of harvested trees being converted into wood products may reduce

harvest rates, it will stimulate demand, because it will increase supply

and lower prices, thereby boosting.

E.     When harvested trees are converted into wood products may reduce

harvest rates, demand will be stimulated because of increasing supply

and lowering prices, which boost.

答案是B,为什么不选A?

Q31

New items developed for automobiles in the 1997 model year included

a safer air bag , which, unlike previous air bags, eliminated the possibility

that a burst of smoke would appear when the bag inflated, and making an

already terrified passenger think the car was on fire.

A.    inflated, and making.

B.     Inflated, so that it could make.

C.     Inflated and made.

D.    Inflated and make.

E.     Inflated to make.

答案是E，为什么不选D?

这三个都属于争论过的题，后来都已经基本算是有了定论了

17.a

24.A

31.D

或许lz应该换个版本的GWD...