Practice 1-1-1
1.an, a 2.compliment 3.minor 4.formerly, formally 5.latter
6.emergency 7.simulation 8.devise, device 9.adapt 10.At one time, at a time
Practice 1-2-1
1.pieces of information 2.theses 3.essays 4.scenery 5.shelves 6.chefs 7.passers-by 8.on-lookers 9.successes 10.progress
Practice 1-3-1
Group one: 1.considerable 2.consideration 3.considerably 4.consid-erate 5.consider
Group two: 1.technicians 2.technical 3.technology 4.technically 5.technique (s) 6.technological
Practice 1-3-2
Part Ⅰ
1.life 2.preparation 3.complaint 4.growth 5.memorize 6.confusion
7.increase 8.bleed 9.decision 10.loss
Part Ⅱ
1.dryness 2.safety 3.diligence 4.laziness 5.poorness/poverty 6.bravery
7.beauty 8.artistic 9.mental 10.wisdom
Practice 1-3-3
1.culture 2.help 3.honesty 4.warmth 5.severely 6.wise 7.tolerant
8.hope 9.humorous 10.inconveniences
Practice 2-1-1
1.When I was young I used to go swimming in the lake.But now it is so polluted that almost everything in it has died.
2.Thirty years ago, the typical American family consisted of a husband, a wife, and two or three children.Now, there are many marriages in which couples have decided not to have any children.
Practice 2-2-1
1.One cannot sleep soundly if he exercises vigorously before retiring to bed.Or: You cannot sleep soundly if you exercise vigorously before retiring to bed.Or: People cannot sleep soundly if they exercise vigorously before retiring to bed.
2.Neither Mary nor Joanne has told her mother the truth.
3.Dogs are our good friends.They help us a lot.
4.If we can't finish our work, the employer will lay us off.Or: If you can't finish your work, the employer will lay you off.
5.An optimist always looks on the cheerful side of life.He believes that if he smiles to the mirror of life, it will smile back to him.Or: Optimists always look on the cheerful side of life.They believe that if they smile to the mirror of life, it will smile back to them.