参考答案和解析
正确答案: C
解析:
根据上句“...can be as minor as. . .,”“可能微小到…”,又根据后面的“...as major as...”,“能大到…”,由此可知应是一种选择关系,or表示一种选择关系,故用or。
更多“单选题______A butB not C orD nor”相关问题
  • 第1题:

    下面结构体的定义语句中,错误的是( )。

    A.struct ord{int x;int y;int z;};struct ord a;

    B.struct ord{int x;int y;int z;};ord a;

    C.struct ord{int x;int y;int z;}a;

    D.struct{int x;int y;int z;}a;


    正确答案:B

  • 第2题:

    Stacie neither ( ) for the past three days.

    A、eats nor drank

    B、eating nor drinking

    C、ate nor drinking

    D、ate nor drank


    参考答案:D

  • 第3题:

    She hardly ever eats ______ potatoes.

    A、bread not

    B、bread or

    C、neither bread or

    D、neither bread nor


    参考答案:B

  • 第4题:

    A) but

    B) because

    C) unless

    D) when


    正确答案:A
    答案:A
    [试题分析]句间关系判断题。
    [详细解答]因为下一句与前句为转折关系,这里只能用 but,故答案为A。

  • 第5题:

    【C10】

    A.but

    B.because

    C.while

    D.in order that


    正确答案:B
    根据上下文判断,“但是我老早就不再向叼着田鼠的猫扔棍子,让它把田鼠放下”,这样做的原因就在下一句:因为被放下的老鼠通常还是会死掉。

  • 第6题:

    The story is hard to understand___________ there are no new words in it.

    A.but
    B.so
    C.though
    D.and

    答案:C
    解析:
    根据句子的意思可以判断前后为让步关系,因此答案为C。

  • 第7题:

    布尔检索技术包括()。

    • A、and
    • B、not
    • C、or
    • D、nor

    正确答案:A,B,C

  • 第8题:

    已知变量ch是字符型变量,下面PASCAL赋值语句正确的是()

    • A、ch:=’ab cd’
    • B、ch:=chr(ord(succ(‘c’)+1))
    • C、ch:=ord(‘b ’)+ord(‘a’)
    • D、ch:=pred(succ(succ(‘f’)))

    正确答案:D

  • 第9题:

    单选题
    在程序中定义CONSTLetter=’h’;则语句Writeln(Chr(Ord(Letter)+(Ord(’A’)-Ord(’a’))))的输出结果是什么?()
    A

    H

    B

    h

    C

    72

    D

    104


    正确答案: D
    解析: 暂无解析

  • 第10题:

    单选题
    已知变量ch是字符型变量,下面PASCAL赋值语句正确的是()
    A

    ch:=’ab cd’

    B

    ch:=chr(ord(succ(‘c’)+1))

    C

    ch:=ord(‘b ’)+ord(‘a’)

    D

    ch:=pred(succ(succ(‘f’)))


    正确答案: D
    解析: 暂无解析

  • 第11题:

    单选题
    Examine the data from the ORDERS and CUSTOMERS table. ORDERS ORD_ID ORD_DATE CUST_ID ORD_TOTAL 100 12-JAN-2000 15 10000 09-MAR- 101 40 8000 09-MAR- 102 35 12500 15-MAR- 103 15 12000 104 25-JUN-2000 15 6000 105 18-JUL-2000 20 5000 106 18-JUL-2000 35 7000 107 21-JUL-2000 20 6500 04-AUG- 108 10 8000 CUSTOMERS CUST_ID CUST_NAME CITY 10 Smith Los Angeles 15 Bob San Francisco 20 Martin Chicago 25 Mary New York 30 Rina Chicago 35 Smith New York 40 Linda New York Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin places his orders?()
    A

    SELECT ord_id, cust_id, ord_total FROM orders, customers WHERE cust_name='Mating' AND ord _ date IN ('18-JUL-2000','21-JUL-2000');

    B

    SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'MARTIN'));

    C

    SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders, customers Where cust _ name = 'Martin');

    D

    SELECT ord_id, cust_id, ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust name = 'Martin');


    正确答案: D
    解析: 暂无解析

  • 第12题:

    单选题
    下面结构体的定义语句中,错误的是(  )。
    A

    struct ord{int x;int y;int z;};struct ord a;

    B

    struct ord{int x;int y;int z;}struct ord a;

    C

    struct ord{int x;int y;int z;}a;

    D

    struct {int x;int y;int z;}a;


    正确答案: B
    解析:
    C语言中结构体变量的定义有三种方法:①定义结构体类型的同时定义结构体变量,如C项;②使用无名结构体类型定义结构体变量,如D项;③先定义结构体类型,后定义结构体变量,如A项,B项错在分别定义结构体类型与结构体变量时需要用“;”隔开。故答案选择B选项。

  • 第13题:

    Many people believe we are heading for environmental disaster ______ we radically change way we  live

    A) but               B) although             C) unless          D) lest


    很多人认为我们正朝向环境灾难,除非我们从根本上改变我们的生活方式

    选C

  • 第14题:

    下面结构体的定义语句中,错误的是( )。 A.struct ord{int x;int Y;int Z;};struet ord a;SXB

    下面结构体的定义语句中,错误的是( )。

    A.struct ord{int x;int Y;int Z;};struet ord a;

    B.struct ord{int x;int y;int Z;}struct ord a;

    C.struct ord{int X;int Y;int Z;}a;

    D.struct{int X;int y;int Z;}a;


    正确答案:B
    结构体定义的类型说明的一般形式为:struct结构体标识名{类型名1结构成员名表l;类型名2结构成员名表2;···};。注意:①结构体说明同样要以分号结尾;②紧跟在结构体类型说明之后进行定义;③在说明一个无名结构体类型的同时,直接进行定义;④先说明结构体类型,再单独进行变量定义等。所以B选项错误。

  • 第15题:

    () the plot is weak, the action is really fantastic.

    A、But

    B、Although

    C、Because


    正确答案:B

  • 第16题:

    下面结构体的定义语句中,错误的是

    A.struct ord{int x;int y;int z;};struet ord a;

    B.atruet ord{int x;int y;int z;}struct ord a;

    C.struet ord{int x;int y;int z;}a;

    D.struct{int x;int y;int z;)a;


    正确答案:B
    解析:定义结构体变量有三种方式:①先声明结构体类型,再定义变量名,如选项A)所示;②在声明类型的同时定义变量,如选项C)所示;③直接定义结构体类型变量,如选项D)所示。 

  • 第17题:

    ( )

    A.But

    B.However

    C.And

    D.So


    正确答案:A

  • 第18题:

    Mr. John was busy,()he could not come.

    • A、but
    • B、therefore
    • C、and
    • D、nor

    正确答案:B

  • 第19题:

    Hurry up,()you’ll be late.

    • A、but
    • B、and
    • C、or

    正确答案:C

  • 第20题:

    Examine the data from the ORDERS and CUSTOMERS table. ORDERS ORD_ID ORD_DATE CUST_ID ORD_TOTAL 100 12-JAN-2000 15 10000 09-MAR- 101 40 8000 09-MAR- 102 35 12500 15-MAR- 103 15 12000 104 25-JUN-2000 15 6000 105 18-JUL-2000 20 5000 106 18-JUL-2000 35 7000 107 21-JUL-2000 20 6500 04-AUG- 108 10 8000 CUSTOMERS CUST_ID CUST_NAME CITY 10 Smith Los Angeles 15 Bob San Francisco 20 Martin Chicago 25 Mary New York 30 Rina Chicago 35 Smith New York 40 Linda New York Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin places his orders?()

    • A、SELECT ord_id, cust_id, ord_total FROM orders, customers WHERE cust_name='Mating' AND ord _ date IN ('18-JUL-2000','21-JUL-2000');
    • B、SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'MARTIN'));
    • C、SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders, customers Where cust _ name = 'Martin');
    • D、SELECT ord_id, cust_id, ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust name = 'Martin');

    正确答案:B

  • 第21题:

    单选题
    Click the Exhibit button and examine the data from the ORDERS and CUSTOMERS tables. Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin placed his orders?()
    A

    SELECT ord_id, cust_id, ord_total FROM orders, customers WHERE cust_name='Martin' AND ord_date IN ('18-JUL-2000','21-JUL-2000');

    B

    SELECT ord_id, cust_id, ord_total FROM orders WHERE ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'Martin'));

    C

    SELECT ord_id, cust_id, ord_total FROM orders WHERE ord_date IN (SELECT ord_date FROM orders, customers WHERE cust_name = 'Martin');

    D

    SELECT ord_id, cust_id, ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust_name = 'Martin');


    正确答案: D
    解析: 暂无解析

  • 第22题:

    单选题
    It is futile to discuss the matter further, because _____ going to agree upon anything today.
    A

    neither you nor I are

    B

    neither you nor me is

    C

    neither you nor I am

    D

    neither me nor you are


    正确答案: C
    解析:
    若两个或两个以上的主语由“or”,“nor”,“either…or”,“neither…nor”,“not only… but also”连接,遵守就近原则。句意为:进一步讨论这个事情是无益的,因为今天你我在任何事情上都不愿达成一致。

  • 第23题:

    单选题
    The ORDERS table belongs to the user OE. OE has granted the SELECT privilege on the ORDERS table to the user HR.Which statement would create a synonym ORD so that HR can execute the following query successfully?()
    A

    CREATE SYNONYM ord FOR orders; This command is issued by OE 

    B

    CREATE PUBLIC SYNONYM ord FOR orders; This command is issued by OE 

    C

    CREATE SYNONYM ord FOR oe.orders; This command is issued by the database administrator 

    D

    CREATE PUBLIC SYNONYM ord FOR oe.orders; This command is issued by the database administrator 


    正确答案: A
    解析: 暂无解析

  • 第24题:

    单选题
    Examine the data from the ORDERS and CUSTOMERS table. ORDERS ORD_ID ORD_DATE CUST_ID ORD_TOTAL 100 12-JAN-2000 15 10000 09-MAR- 101 40 8000 09-MAR- 102 35 12500 15-MAR- 103 15 12000 104 25-JUN-2000 15 6000 105 18-JUL-2000 20 5000 106 18-JUL-2000 35 7000 107 21-JUL-2000 20 6500 04-AUG- 108 10 8000 CUSTOMERS CUST_ID CUST_NAME CITY 10 Smith Los Angeles 15 Bob San Francisco 20 Martin Chicago 25 Mary New York 30 Rina Chicago 35 Smith New York 40 Linda New York Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin places his orders?()
    A

    SELECT ord_id, cust_id, ord_total FROM orders, customers WHERE cust_name='Mating' AND ord _ date IN ('18-JUL-2000','21-JUL-2000');

    B

    SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'MARTIN'));

    C

    SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders, customers Where cust _ name = 'Martin');

    D

    SELECT ord_id, cust_id, ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust name = 'Martin');


    正确答案: B
    解析: 暂无解析