81． After being recycled，the waste can be made into other materials.

82． She looked pale and kept coughing all the time.

83． The winter is coming，and the weather will become___________ .（　?。?/div>

84． Computers are our friends unless you use them in the wrong way.

85．According to the art dealer，the painting ________ to go for at least a million dollars．（　?。?/div>

86．    As most people know，in the past few years，sandstorms have swept across many cities and areas of North China，polluting the air and disturbing daily lives of human beings.People look dirty and suffer many kinds of illnesses，such as breath difficulty.The sandstorm is such a serious problem that it has not only undermined the industrial and agricultural development of our country but also caused a lot of trouble to the living conditions of the Chinese people.It is expected that effective（有效的） measures should be taken as soon as possible through our joint efforts to limit its occurrence.
    So what should we do with the frightening sandstorms？Some experts put forward practical suggestions as follows：For one thing，more funs（基金） ought to be put into tree planting and forest protection so as to keep more water resources within the surface of the earth.For another，governments of all countries should make laws on environmental protection.For example，banning the use of throw-away chopsticks and punishing illegal tree cutting.Scientists should also study and find ways to cut down the degree of its destruction and to improve the whole environment.
    How people look forward to sunny days with little breeze（微風(fēng)） touching their faces now and forever!Nevertheless，I am fully confident that the golden days can come back so long as everyone tried his best to protect natural environment from today on.

（1）The underlined word "undermined" in Paragraph 1 means " " in Chinese.
A.削弱
B.鼓勵(lì)
C.保持
D.創(chuàng)造
（2）From the first paragraph，we can infer .
A.China has taken no measures to prevent sandstorms
B.sandstorms can cause much damage to human beings and their daily lives
C.the sandstorm is the most dangerous natural disaster to human beings
D.more sandstorms will happen in the near future in North China
（3）How many ways do some experts put forward to fight against sandstorm？
A.5.
B.4.
C.3.
D.2.
（4）What's the author's attitude towards the situation to sandstorms' problems？
A.Unconfident.
B.Optimistic .
C.Regretful.
D.Satisfied.

87．    Mexico's neighbours are the United States to the north and Guatemala and Belize to the south.Mexico is about one quarter of the size of the United States.Mexico has more than ninety million people.The language of Mexico is Spanish.This makes Mexico the world's largest Spanish-speak-ing country.
    Mexico City is the capital and largest city of Mexico.The city is also very high.It is 7349 feet high（2240 metres）.This makes it one of the highest capital cities in the world.The population of Mexico City grows bigger every day.About thirty million people live there.It has more people than any other city in the world，even more than Tokyo.
    Mexico also has its specialities.Many of the foods we eat started in Mexico.Foods like beans，maize，avocados，tomatoes，peanuts，chili peppers，vanilla，and chocolate come from Mexico.Mexico is also famous for its cactuses（仙人掌） plants.Mexico has more kinds of cactuses than any other country.

（1）Mexico is the USA.
A.on the south of
B.on the north of
C.a part of
D.as large as
（2）Which of the following is NOT true？
A.Mexico City is the capital of Mexico.
B.The population of Mexico City is 30，000，000.
C.Tokyo is one of the cities with the largest population.
D.Mexico City is the highest city in the world.
（3）Tomatoes were originally grown in .
A.America
B.Spain
C.Tokyo
D.Mexico
（4）The best title of the passage is .
A.Mexico City
B.Mexico's Plants
C.Mexico
D.Mexico's Population

88． Mary has confidence in winning the competition.

89．    Most people agree that eating healthy food is important.But sometimes making good food choices can be difficult.Now，there are apps that can help people learn about the food they eat to improve their health and their dining out experience.
    Open Table app
    Open Table app helps people choose restaurants when they want to go out to eat.It is a free service that shows users restaurants available based on where and when they want to dine.It gives users points when they make reservations（預(yù)定），which can add up to discounts on restaurant vis-its.
    Max McCalman's Cheese & Wine Pairing app
    Wine and cheese can be a great combination.But which wines go best with which cheeses？Max McCalman's Cheese & Wine Pairing app can help.It provides information about hundreds of different cheeses and suggests wines to pair with each.Max McCalman's Cheese & Wine Pairing app is free.
    HappyCow app
    Vegetarians do not eat animal meat.Vegans do not eat any animal products.The HappyCow app is made for both groups.Users can search for vegetarian-vegan restaurants and stores around the world.
    LocalEats app
    Restaurant chains，like McDonalds，can be found almost anywhere a person might travel.But sometimes travelers want to eat like locals.The LocalEats app is designed for that.It can help you find local restaurants in major cities in the US and in other countries.It costs about a dollar.
    Where Chefs Eat app
    Where Chefs Eat is a 975-page book.Most people would not want to carry that around.But there is a much lighter app version of the same name for just ＄ 15.Six hundred chefs provide in-formation on 3 ，000 restaurants around the world on the Where Chefs Eat app.

（1）What do the first two apps have in common？
A.They are both free of charge.
B.Discounts are provided on both.
C.Best wines can be reserved on both.
D.T hey tell you where to have the best food.
（2）Who is HappyCow app probably designed for？
A.Friends drinking wines together.
B.Chefs enjoying meat very much.
C.People who want to go on a healthy diet.
D.Those often eating in a restaurant.
（3）Where can we most likely see the text？
A.On a tourism guide.
B.In a cellphone application introduction.
C.In a students' textbook.
D.On a scientific discovery TV program.
（4）Why on earth did the writer make this text？
A.To help fatties to lose some weight.
B.To bring us some healthy eating habits.
C.To make some money by advertising apps.
D.To introduce some useful apps to food lovers.

90． Meimei is going to be an older sister.Her parents are planning to have their ___________ child.（　?。?/div>