It’s only ________ walk from here to the cinema.

题目
It’s only ________ walk from here to the cinema.

A.half an hours

B.half a hour’s

C.half an hour’s

D.half a hours’

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相似问题和答案

第1题:

Did you see him _____ out of the classroom?

A、has walked

B、to walk

C、walked

D、walk


正确答案:D

第2题:

查询学生表S的全部记录并存储于临时表文件one中的SQL命令是( )。

A.SELECT*FROM学生表INTO CURSOR one

B.SELECT*FROM学生表To CURSoR one

C.SELECT*FROM学生表INTO CURSOR DBF one

D.SELECT*FROM学生表TO CURSOR DBF one


正确答案:A
A。【解析】使用短语INTOCURSORCursorName可以将查询结果存放到临时数据库文件中,其中CursorName是临时文件名,该短语产生的临时文件是一个只读的.dbf文件,当查询结束后该临时文件是当前文件,可以像一般的.dbf文件一样使用,当关闭文件时该文件将自动删除。

第3题:

Sam Scott and his sister Ann are students. Sam(11) school by bus, and Ann does, too.

Some of(12)walk(走) to school.Sam and Ann (13) at four o'clock in the af- ternoon. They (14) before dinnerc晚饭前),and they watch TV after dinner. They u- sually(15 early(早).

Sam and Ann (16) three meals(饭) a day :breakfast, lunch and dinner. They.have breakfast at home.(17) they have lunch (18) school. They often eat dinner at home.Mr Scott (19) from( 20) at five and they have dinner at six.

( )11.

A. go to

B. go to the

C. goes to

D. goes to the


正确答案:C
11.C【解析】主语Sam是第三人称单数,因此谓语动词用单数形式.

第4题:

现有学生社团管理数据库,其中包括基本表如下: 学生(学号,姓名,所在系); 社团(社团编号,名称,成立时间,社长),其中社长由该社团中学生担任; 参加(学号,社团编号,参加时间,职务),其中若不担任任何社团职务,属性“职务”为空; 若要查询参加了学生“李明”所参加的所有社团的学生学号、姓名和所在系,正确的SQL语句是()。

A.SELECT * FROM 学生, 参加 WHERE 参加.学号=学生.学号 AND 姓名='李明;#B.SELECT * FROM 学生 S1 WHERE 学号 IN (SELECT 学号 FROM 参加 WHERE 社团编号 IN (SELECT 社团编号 FROM 参加, 学生 WHERE 参加.学号=学生.学号 AND 姓名='李明'));#C.SELECT * FROM 学生 S1 WHERE NOT EXISTS (SELECT * FROM 参加 P1, 学生 S2 WHERE P1.学号=S2.学号 AND S2.姓名='李明' AND NOT EXISTS (SELECT * FROM 参加 P2 WHERE P2.学号=S1.学号 AND P2.社团编号=P1.社团编号));#D.SELECT * FROM 学生 S1 WHERE EXISTS (SELECT * FROM 参加 P1, 学生 S2 WHE
A

第5题:

查询学生表 S 的全部记录并 存储 于临时表文件 one 中的 SQL 命令是

A)SELECT * FROM 学生表 INTO CURSOR one

B)SELECT * FROM 学生表 TO CURSOR one

C)SELECT * FROM 学生表 INTO CURSOR DBF one

D)SELECT * FROM 学生表 TO CURSOR DBF one


正确答案:A

第6题:

FROM (53)

A.R

B.S

C.RS

D.R,S


正确答案:D
关系R(A,B,C,D,E)和S(B,C,F,G)做自然连接时,会以两个关系公共字段做等值连接,然后将操作结果集中重复列去除,所以运算后属性列有7个。接下来分析关系表达式的SQL形式,题目中关系表达式先进行了R与S的自然连接。得到的结果集为:RS(R.A,R.B,R.C,R.D,R.E,S.F,S.G)。此后的选择操作“σ36”可表达为“σR.CS.F”;最后进行投影操作“π1,3,6,7”即选出结果集的第1,3,6,7列,对应的列为:R.A,R.C,S.F,S.G(由于无重复字段,A,C,F,G及A,R.C,F,G或其它等价形式均可)。

第7题:

设有类定义如下:

class InOut{

String s= new String("Between");

public void amethod(final int iArgs){

int iam;

class Bicycle{

public void sayHello(){

//Here

}

}

}

public void another(){

int iOther;

}

}

以下哪些语句可以安排在//Here处 ?

A. System.out.println(s);

B.System.out.println(iOther);

C. System.out.println(iam);

D. System.out.println(iArgs);


正确答案:AD

第8题:

I __________ along the street when he shouted at me.

A. walked

B. was walking

C. walk


参考答案:B

第9题:

共用题干
第二篇

Home Heating

Central heating became popular only after the Civil War.Typically,coal-burning
furnaces(火炉)fueled the early systems.Natural gas had developed into the leading fuel
by 1960.Its acceptance resulted in part from its wide uses.Because it comes primarily
from U.S.and Canadian fields , natural gas is also less vulnerable(脆弱的)than oil is to
war.Oil remains the most important fuel in a few areas,such as New England.
Electric heating dominates most areas with mild winters and cheap electricity,including
the South and the Northwest.It was made popular at least in the South by the low cost of
adding electric heating to new houses built with air-conditioning.Bottled gas,which is
somewhat more expensive than utility gas,is the fuel of choice in rural areas not served by
utility pipelines.Wood is the leading heating fuel in just a few rural counties.
Home heating,which accounts for less than 7 per cent of all energy consumed in the
U.S.,has had a commendable(值得赞扬的)efficiency record : from 1 978 to 1 997 , the
amount of fuel consumed for this purpose declined 44 per cent despite a 33 per cent
increase in the number of housing units and an increase in house size.The
U.S.Department of Energy,however,forecasts that energy used in home heating will rise
by 14 per cent over the next two decades.That rise is small considering an expected 21 per
cent increase in the number of houses and the trend toward larger houses.
Natural gas and electricity will probably dominate the home heating market for the next
two decades.Solar(太阳的)heating never became popular because of cost and limited
winter sunlight in most areas;in 2000 only 47,000 homes relied on it.

What fuel is the dominant fuel in New England?
A:Gas.
B:Electricity.
C:Wood.
D:Oil.

答案:D
解析:

第10题:

以下塑料覆盖温室由小到大顺序排列,正确的是()

A.low tunnels,walk-in tunnels,large plastic houses

B.walk-in tunnels,low tunnels,large plastic houses

C.large plastic houses,walk-in tunnels,low tunnels

D.以上都不正确


B