We’ve tried many ways, but all in vainOnly in this way, （） t

A.come

B.are coming

C.came

D.have come

A、use

B、useful

C、used

D、useless

Any open flame can’t exist in this business building

A.Yes. We’ve removed all the flammable gas.

B.Yes. We’ve searched everywhere for flammable liquid

C.Yes. All the flammable liquid and gas have been removed already.

D.Yes. We’ve removed all the liquid, gas and wood which can be burned

A

The aim(目的) of students who come to school is ro srudy． But if we haven't a right way to study we will waste the time or the money． The following are ways for studying．

The best time for reading js morning． Because in the morning， the air is fresh and our minds are clear．For that reason，we can get good results．

Jt- studying we must be'patient(耐心的)． If w．e don't understand a text well，we must read it again． We should not read the next one till we have learned the first one well．

When we are studying，we must put our hearts into the book． We can not read absent-．mindedly(心不在焉地) ，or we can get nothing from the book while we are reading．

We must always ask "whys"． If it is not well understood，write it down and ask our teach-ers or parents，brothers or friends，in any possible way． We must know it completely and then our knowledge can be used well．

Though there are many ways for studying，however，the above mentioned(提及的) will be quite enough if we can keep them in heart and do so，

( )21． The article tells us_________

A． to read in the morning

B． to pay close attention to ways for studying

C． the importance of reading

D． to have patience in studying

----we’ve spent too much money recently.

----well, it isn’t surprising. Our friends and relatives______around all the time

A. are coming

B. had come

C. were coming

D. have been coming

A、varying

B、variety

C、various

D、various of

Water is the __46___ of all the things we eat and drink . Not many people understand this but __47____ quite true . The human body can go without ___48___ for a long time . We’ve got many examples for this . Yet two __49___ three days without water can usually make people __50____ . Man can’t live __51____ water .

Many people don’t understand how ___52__ water the human body needs __53___ work well , and many people , especially young people , do not drink enough , ___54__ in very hot weather . Our body has mostly water , about 65% to 75% . That is to say about two thirds of our body is water . When we do sports , some of the water will get away from our body . __55 _ we don’t drink some water , we won’t have enough water． And if we don’t have enough water , we’ll feel tired and many of us will get ill . So you know how important water is to us .

46.___________

( )46. A. important

B. most important

C. more important

D. different

(A) Oh, nothing!

(B) Never mind. We all make mistakes.

(C) You should blame yourself.

(D) Don’t worry.

Many people believe we are heading for an environmental disaster(灾难) _________ we radically(根本地) change the way we live.

A． but

B． though

C． unless

D． in case

Which of the following is NOT TRUE in the passage?

A. The two-way radio is like a telephone for Australian farmers.

B. Families on large farms could keep in touch with each other by radios.

C. The two-way radio is like a newspaper for Australian farmers.

D. All the Australians live on dry places, and they use radios in many ways.