46.A. some risks          B. a lot less          C. some notes     D. a lot more

47.A. old                 B. nervous           C. weak          D. tired

48.A. closely              B. quickly           C. privately        D. quietly

49.A. age                 B. speed             C. distance        D. school

50.A. worry               B. hesitate           C. think           D. quarrel

51.A. singing              B. working           C. bargaining      D. learning

52.A. if                   B. and              C. but            D. before

53.A. tiresome             B. hard              C. interesting      D. easy

54.A. blamed              B. amazed            C. interrupted     D. informed

55.A. their                B. his               C. our            D, your

第三部分  阅读理解（共20小题；每小题2份，满分40分）

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

A

    Tht Healthy Habits Survey（调查）shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.

1.How many times did you brush your teeth yesterday?

·Finding：A full 33% of seniors brush their teeth only once a day.

·Step：Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.

2.How many times did you wash your hands or bathe yesterday?

·Finding：Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash their hands only 4 times a day-half of the number doctors recommend.

·Step：We touch our faces around 3,000 times a day-often inviting germs（病菌）to enter our mouth, nose, and eyes.Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.

3. How often do you thind about fighting germs?

·Finding：Seniors are not fighting germs as well as they should.

·Step：Be aware of germs. Do you know it is not your toilet but your kitchen sponge（海绵）that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.

56. What is found out American seniors?

A. Most of then have good habits.

B. Nearly 30%of then bathe three days a week .

C. All of then are fighting germs better than expected .

D. About one third of them brush their teeth only once a day

57. Doctors suggest that people should wash their hands           .

A. twice a day      B. three times a day

C. four times a day  D. eight  times  a day

58.Which of the following is true according to the text ?

A. We  should  keep from touching our faces .

B. There are less than 300 types of bacteria in the mouth .

C．A kitchen sponge can carry more germs than  a toilet .

D. We should wash our hands before touching a door handle .

59. The text probably comes from             .

A. a guide book   B. a popular magazine

C. a book review  D .an official document

B

Using too much water or  throwing  rubbish into our rivers are clear ways that humans can

Put our water supply in danger ,but we also affect our water supply in less obvious ways .

You may wonder how paving(铺砌) a road can lead to less useable fresh water . A major

Part of the  water  we  use every day is groundwater . Groundwater does not come from lakes or rivers .It come from underground . The more roads and parking lots we pave ,the less water  can

Flow into the ground to become g