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一____________?一It's half past seven.A. What time is it nowB. Can I help youC. Where are you going

题目

一____________?

一It's half past seven.

A. What time is it now

B. Can I help you

C. Where are you going

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相似问题和答案

第1题:

*((int *)pval)/=2; //我想问一下,这个语法怎么理解,太复杂了 具体代码如下。

#include "stdio.h"void half(void *pval,char type);main(){ int i=20; long l=100000; float ff=12.456; double d=123.044444; printf("%d\n",i); printf("%ld\n",l); printf("%f\n",ff); printf("%lf\n",d); half(&i,'i'); half(&l,'l'); half(&ff,'ff'); half(&d,'d'); printf("\n%d",i); printf("\n%ld",l); printf("\n%f",ff); printf("\n%lf",d); return 0; }void half(void *pval,char type){ switch(type) { case 'i': { *((int *)pval)/=2; //我想问一下,这个语法怎么理解,太复杂了 break; } case 'l': { *((long *)pval)/=2; break; } case 'ff': { *((float *)pval)/=2; break; } case 'd': { *((double *)pval)/=2; break; } } }


*((int *)pval)/=2; 一步步讲解: 1,(int*)pval 是把pval指针强制类型转化成 int*,这时pval可看作是个指向int的指针。为了方便说明我们可以int *p = (int*)pval;以后就可以用p代替(int*)pval了。 2,*(p) /=2;也就是 *p /= 2; 这里括号可以去掉了。 /=类似+=、*=, *p /=2;就是 *p = *p/2;

第2题:

The price you quoted is so high that we () help ()this transaction.

A、can…to cancel

B、can't...canceling

C、can…canceling

D、can't…to cancel


参考答案:B

第3题:

What()I do()I miss the train.

A.shall,because

B.shall,if

C.can,because

D.shall,although


参考答案:B

第4题:

I've been waiting for him for ______ hour and ______ half.

A. ×; ×
B. the; a
C. a; ×
D. an; a

答案:D
解析:
"an hour and a half"表示"一个半小时"。其他选项都不成立。

第5题:

b)

main()

{

union{ /*定义一个联合*/

int i;

struct{ /*在联合中定义一个结构*/

char first;

char second;

}half;

}number;

number.i=0x4241; /*联合成员赋值*/

printf("%c%c\n", number.half.first,

mumber.half.second);

number.half.first='a'; /*联合中结构成员赋值

*/

number.half.second='b';

printf("%x\n", number.i);

getch();

}


正确答案:

 

AB (0x41 对应'A',是低位;Ox42 对应'B',
是高位)6261 (number.i 和number.half 共用一块地址空
间)

第6题:

一____________?

一I'm a journalist.

A. What's your name

B. What's your job

C. Where are you from


参考答案:B

第7题:

Quite a lot of people watch TV only to ______ time.

A、waste

B、spend

C、kill

D、past


参考答案:C

第8题:

10. —What's the time?

—It's _________five.

A. at

B. to

C. about

D. past


正确答案:C
10.C【解析】说大约几点钟,应该用about或者a. round。

第9题:

A BGP router is configured with bgp dampening 8 300 1500 20 route-map 1 .What does the value of 20 represent?()

A. reuse

B. suppress

C. half-life

D. max-suppress-time


参考答案:D

第10题:

――____.―――What's the matter7.

A.Hello!
B.Is that Tom speaking?
C.Help!
D.Excuse m

答案:C
解析:
暂无解析