why do you need to take the lube oil sample for analysis ? in the analyzing , what can you possibly find ?and if you find these substances ,what are the possible problems the engines may have ?why ?

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第1题：

May I take this book out of the reading room? No,you . You read it in here. ( )

A. mightn’t

B. won’t

C. need’t

D. mustn’t

正确答案：D

第2题：

you， do， eraser， how， spell【连词成句）

________________________？

正确答案：
54. How do you spell eraser

第3题：

You look(). What () you () ?

A、tire, did…do

B、tiring, have…done

C、tired, do…do

D、tired, have…been doing

参考答案：D

第4题：

The stages within the development phase of the software life cycle are ( 71 ).

A.design, analysis, implementation, and testing

B.analysis, design, implementation, and testing

C.analysis, design, testing, and implementation

D.design, analysis, testing, and implementation

正确答案：C

第5题：

What () you () at eight o'clock tomorrow morning?

A、are; doing

B、do; you

C、will; do

D、will; be doing

参考答案：D

第6题：

9． _______you _______ stay at home today?

A． Do ; have to

B． Must; have to

C． Have; to

D． Do ; must

正确答案：A
9．A【解析】have to的疑问形式借助动词do来实现， must的疑问形式是将must提到主语之前，另外还需注意have to与must不能重复使用。故答案为A。

第7题：

—Where____you____lunch?

—Athome．Therewasnoschoollunch

A．did；have

B．are；having

C．will；have

D．do；have

正确答案：A

第8题：

Your little girl is becoming very rude. You ________ scold her.

A.may

B.can

C.ought to

D.need

参考答案：C

第9题：

以下程序的输出结果是()。main(){char*a[][5]={“how”,”do”,”you”,”do”,”!”};char**p;inti;p=a;for(i=0;i<4;i＋＋);printf(“%s”,p[i]);}()

A.howdoyoudo!

B.how

C.howdoyoudo

D.hdyd

正确答案:C

第10题：

You look（） What（）you（）?

Atire；did；do

Btiring；have；done

Ctired；do；do

Dtired；have；been doing

D
略

why do you need to take the lube oil sample for analysis ? in the analyzin

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