词汇学习6：
1. The old concerns lose importance and some of them vanish altogether.
A）develop　B）disappear
C）linger　D）renew
2. In the United States educational system, intermediate school is the transitional phase between the primary grades and high school.
A）stage　B）notion
C）pattern　D）alternative
3. Fluoride deters tooth decay by reducing the growth of bacteria that destroy tooth enamel.
A）facilitates　B）overwhelms
C）inhibits　D）loosens
4. The firm of Bonnin and Morris in Philadelphia was probably the first American company to manufacture porcelain.
A）silverware　B）crystal
C）china　D）linen
5. Gunpowder was used extensively in firearms prior to 1990.
A）in　B）around
C）from　D）before
6. We packed up the things I had accumulated over the last three years and left for good.
A）close　B）near
C）past　D）final
7. The chemical is lethal to rats but safe to cattle.
A）toxic　B）harmful
C）deadly　D）contagious
8. She is very conscientious about her work.
A）worried　B）careful
C）anxious　D）nervous
9. She has consolidated her power.
A）strengthened　B）won
C）hardened　D）united
10. The drinking water is contaminated with impurities.
A）blackened　B）polluted
C）darkened　D）mixed
11. Her novel depicts a futuristic America.
A）writes　B）sketches
C）describes　D）indicates
12. He expressed concern that the ship might be in distress.
A）despair　B）difficulties
C）need　D）danger
13. They are endeavoring to change society as a whole.
A）trying　B）working
C）doing　D）making
14. Your eternal boasting annoys everyone.
A）unchangeable　B）everlasting
C）boring　D）monotonous
15. The other women seemed contented and they even exhibited their bellies with pride.
A）demonstrated　B）uncovered
C）spread　D）showed
词汇学习7：
1. Loud noises can be annoying.
A）hateful　B）painful
C）horrifying　D）irritating
2. Human facial expressions differ from those of animals in the degree to which they can be deliberately controlled and modified.
A）sufficiently　B）noticeably
C）intentionally　D）absolutely
3. The Constitution's vague nature has given it the flexibility to be adapted when circumstances change.
A）imprecise　B）concise
C）unpolished　D）elementary
4. The expedition reached the summit at 10:30 that morning.
A）top of the mountain　B）bottom of the mountain
C）starting point　D）site
5. The latest census is encouraging.
A）count　B）statement
C）agreement　D）estimate
6. Academic records from other institutions often become part of a university's official file and can neither be returned to a student nor duplicated.
A）borrowed　B）purchased
C）copied　D）rewritten
7. While serving in the Senate in the early 1970's, Barbara Jordan supported legislation to ban discrimination and to deal with environmental problems.
A）list　B）forbid
C）handle　D）investigate
8. Gambling is lawful in Nevada.
A）legal　B）irresistible
C）enjoyable　D）profitable
9. The always mock me because I am ugly.
A）smile at　B）look down on
C）belittle　D）laugh at
10. These are our motives for doing it.
A）reasons　B）arguments
C）targets　D）stimuli
11. It was a question of making sure that certain needs were addressed, notably in the pensions area.
A）noticeably　B）remarkably
C）particularly　D）significantly
12. His new girlfriend had omitted to tell him that she was married.
A）forgotten　B）failed
C）deleted　D）left out
13. Many of their ideas are being incorporated into orthodox medical treatment.
A）acceptable　B）conservative
C）western　D）conventional
14. Charges for local telephone calls are outrageous.
A）unheard of　B）unacceptable
C）unbelievable　D）ridiculous
15. Guests were scared when the bomb exploded.
A）frightened　B）killed
C）endangered　D）rescued