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搜题/搜资源
【单选题】【消耗次数:1】
he []his pen on the desk and began reading.
①
lay
②
laid
参考答案:
复制
纠错
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【多选题】
He_____________ to be reading when his mother came in.
①
drew a conclusion
②
nothing but
③
made himself seem
④
pretended
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【单选题】
His father began to work ______ he was seven years old.
①
as old as
②
as early as
③
as soon as
④
as much as
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【单选题】
5. His father began to work ____he was seven years old.
①
as old as
②
as early as
③
as soon as
④
as much as
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【单选题】
She put her pen [填空] the desk.
①
in
②
on
③
at
④
for
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【单选题】
The letters for the boss __________ on his desk but he didnt read them until three days later.
①
were put
②
was put
③
put
④
has put
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【多选题】
_____________ , he began to write a report.
①
Finish the exploration
②
Having finished the exploration
③
The exploration finished
④
The exploration finish
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【判断题】
Before he began to study in the university, he had worked in a company for three years.
①
正确
②
错误
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【单选题】
The magazine is ______reading, so he advised me ____it.
①
well worth; to buy
②
very worth; buying
③
worthing , buying
④
worthy, to buy
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【单选题】
A pen pal provides good motivation for your writing because he or she ____.
①
lives far away from you
②
knows China a lot so that you can have a lot to talk about
③
also keeps a diary
④
may inform you of many interesting things in his or her culture
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【单选题】
A: Dont worry. Ill leave the message on his desk. B: [填空].
①
Thats great
②
Thats great idea
③
Thank goodness
④
Its kind of you
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随机题目
【单选题】
若a为终结符,则A→α·aβ是项目。
①
归约
②
移进
③
接收
④
待约
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【单选题】
一个确定的有穷自动机DFA是一个。
①
五元组(K,Σ,f,S,Z)
②
四元组(VN,VT,P,S)
③
四元组(K,Σ,f,S)
④
三元组(VN,VT,P)
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【单选题】
B是单个的非终结符号,a是单个的终结符号。)
①
Aα
②
Aa或AaB
③
αβ
④
αAβαγβ
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【单选题】
算符优先分析法从左到右扫描输入串,当栈顶出现时进行归约。
①
素短语
②
直接短语
③
句柄
④
最左素短语
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【单选题】
FORTRAN语言中的存储分配策略是。
①
时钟分配策略
②
最佳分配策略
③
静态存储分配策略
④
动态存储分配策略
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【单选题】
算符优先文法G【S】:EàE+T,Tà(E)|i则关于优先级的判断正确的是____。
①
+?>(
②
(?>(
③
+?>)
④
(?>)
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【单选题】
四元式之间的联系是通过实现的。
①
指示器
②
临时变量
③
符号表
④
程序变量
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【单选题】
合并表达式中的常量运算的目的是。
①
合并常量,使表达式中的常量尽可能少
②
合并常量,使表达式尽可能简短
③
将可在编译时刻计算的运算在编译时刻计算出来,用所计算出来的值替换表达式中出现的所有这种运算,使得生成的代码指令尽可能少
④
以上都不是
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【判断题】
一个语言的文法是唯一的。
①
正确
②
错误
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【判断题】
正规式的运算符“|”读作“或”。
①
正确
②
错误
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