There are two general rules for giving instuctions; they must be kept as simple as possible, and they must be（）.

A:logical B:feasible C:authentic D:natural

Giving examples to illustrate the use of antonomasia (借代) in translation .

Three years ago, he got （）drugs. Now with my help, he decides （）giving it up.

A:into; to B:into; on C:over; to D:off; on

She was complaining that the doctor was __ too much for the treatment he was giving her.

A:expending B:offering C:costing D:charging

She was complaining that the doctor was __ too much for the treatment he was giving her.

A:expending B:offering C:costing D:charging

The correct procedure for giving an auxiliary boiler a bottom blow, is to begin .

A:when the boiler has been secured long enough for most solids to settle B:when the boiler has been cooled to ambient temperature C:only after raising the water level to within 0.5 inch of the high water cutout only D:after bypassing the low pressure