下面语句执行结果为( ) public static void main(string[] args){ int i=4; if(i<0){ i=1;}
执行下面代码后的输出是( )。 m=1; while (m <2) system. out. println(m);
下面语句执行结果为( ) public static void main(string[] args){ int i=4; if(i<0){ i=1;} else{i=2;} system.out.println(i);
请阅读下面的程序,sum的值为( ) public class test { public static void main(string[] args) { int sum = 0; for (int i = 1; i <= 100; i ) { if (i % 2 == 1) { continue; } sum = i; } system.out.println("sum = " sum); } }
下列语句序列执行后,k 的值是 ( ) int i=10, j=18, k=30; switch( j - i ) { case 8 : k ; case 9 : k =2; case 10: k =3; default : k/=j; }
下列语句序列执行后,k的值是( ). int j=8, k=15; for( int i=2; i!=j; i ) { j-=2; k ; }
在进行赋值运算时,将运算符右边的值赋给左边的变量( )
当int x = 3 , y = 4时,表达式boolean b =x == y ? true : false的结果是false( )
当方法中的返回值类型是void时,可以不写return语句( )
方法递归次数过多会导致内存溢出( )
比较运算符用于对两个数值或变量进行比较,其结果是一个布尔值( )
一个类中可以定义多个同名的方法,只要他们的返回值类型不同即可( )
在switch语句中,每个case关键字后面必须有break( )
下列哪个叙述是正确的?( )
实例变量( )
类与对象的关系是( )
对象使用时,下面描述错误的是( )
下列关于构造方法定义的描述中,错误的是( )
下面关于java中类的说法哪个是不正确的( )
类与对象的关系是( )
下列关于构造方法的特点的描述中, 错误的是( )
下列代码中的“this”指的是( )。 class bird{ int x,y; void fly(int x,int y){ this.x=x; this.y=y; } }
对于下列代码: 1) class person { 2) public void printvalue(int i, int j) {//...} 3) public void printvalue(int i){//...} 4) } 5) public class teacher extends person { 6) public void printvalue() {//...} 7) public void printvalue(int i) {//...} 8) public static void main(string args[]){ 9) person t = new teacher(); 10) t.printvalue(10); 11) } 12) } 第10行语句将调用( )语句。
下图右侧的矩形表示( )。
下列选项中可以表示类图中的protected成员变量的是( )
阅读下面代码: class parent{ protected int addvalue(int a,int b){ int s; s=a b; return s; } } class child extends parent{ } 若要在child类中对addvalue方法进行重写,下面对于child类中的addvalue方法头的描述( )是正确的。
阅读下列代码 import java.io.*; public class example{ public static void main(string[] args) throws exception { outputstream out = new fileoutputstream("itcast.txt ", true); string str = "欢迎你!"; byte[] b = str.getbytes(); for (int i = 0; i < b.length; i ) { out.______(b[i]); } out.close(); } }下列选项中,哪个填写在程序空白处会使程序正确。
下列关于java.io.fileoutputstream的说法错误的是( )
通过file类可对文件属性进行修改。
ioexception必须被捕获或抛出。
java中提供了用于读写unicode字符的字符流reader类和writer类。
file类中判断文件是否存在的方法是 ( )。
阅读下列的程序 import java.util.*; class student { string name; string age; public student(string name, string age) { this.name = name; this.age = age; } public string tostring() { return name ":" age; } } public class example{ public static void main(string[] args) { set set = new hashset(); set.add(new student("tom", "10")); set.add(new student("jerry", "10")); set.add(new student("tom", "10")); } } 下列选项中,程序的运行结果是:set中的元素个数为( )
public class example { public static void main(string[] args) { arraylist list = new arraylist(); // 创建arraylist list.add("tom"); // 向该中添加字符串 list.add("jerry"); iterator it = list.iterator(); //获取迭代器 it.next(); it.next(); system.out.println(it.next()); } } 运行以上程序,输出结果是( )
we often ( ) that when other people do the same things as we do, they do them for the same reasons; but this assumption is not always reasonable.
he ( ) the gift of imagination from his family, but he lacked the driving power to take action.
after a(n) ( ) physical exam, my doctor said i was in good condition except that my blood pressure was a little high.
our bodies have greater ( ) than most of us realize, and we can benefit by remembering this.
he was proud of being chosen to ( ) in the game, and he promised that he would try as hard as possible.
city residents the housing price is unreasonably high.
don’t just ‘wrong with it; suggest some positive ways to solve the problem.
he intends to quit the job, not that he dislikes it, but that he is too old for it. 可翻译为:他打算辞职,不是因为他讨厌这项工作,而是因为他年纪太大了,不适合这项工作。
it is not that kate doesn’t want to help you, but that it is beyond her power. 可翻译为:不是凯特不想帮你,而是这超出了她的能力范围。
not that i’m unwilling to lend you a hand, but (that) i’m too busy for the moment. 可翻译为:不是我不想帮你,而是我现在太忙了。
“for most undergraduates, non-stop internet connectivity is the fuel of college life.”的参考译文是 对于大多数本科生来说,永不间断的网络是大学生活的动力。
“the internet is a powerful tool, but make sure that you use it wisely for all the good value it offers and that you won’t let too much of a good thing become something bad.”的翻译是: 互联网是一个强大的工具,但是你要确保能明智地利用它,来获得它所具备的一切好处,确保你不会过度使用它而使之变成害人的东西
in the text in section b, why does the author regard the internet as a double-edged sword? like pollution and traffic jams that come with the convenience of cars, internet access has proven so popular that it has given rise to a new kind of social epidemic, internet addiction.
the sentence “on one campus, students use wi-fi to fire off instant messages, review their homework assignments, and check their bank balances.” means 有一所大学里,学生用无线网络点燃即时信息、复习家庭作业以及查看银行账户余额。
the sentence “these things didn’t happen to these people because they were lazy or stupid, they happened because of addiction.” means 这些事情没有发生在这些人身上是因为他们懒惰或愚蠢。事情发生了因为他们上网成瘾。
she held her hand above her eyes to shield them________ the sun so that she could see more clearly the man in front of her.
what writing pattern does the author use in section a?
my daughter was shy; she was afraid to ask questions, ________ to questions in class, or talk with other children.
in which month did the story of section b take place?
what is jonda in section b?
when talking about cooperation agreement, they held out several terms.
we will any aggression.
he is fair to us without .
the budget of the has been hacked almost in half.
the thesis may at first strike one as extreme, but evidence exists to support it.
working 20 hours per week or more, _____ school achievement and commitment.
many power stations have been modernized to less pollution.
my parents do not object to my taking part-time jobs, but they remind me not to let them ______my school work.
he denies the university’s _____ that he cheated in two tests through having knowledge of the questions in advance.
in factories, workers are mostly male while female workers are __.
they were _____ to sell their house in order to pay their debts.
the scientist is _____ in many spheres of knowledge.
the prime minister ______ that a five-man committee had been founded to investigate the cause of the accident.
the rent is reasonable, and ______, the location is perfect.
this kind of desk can be _____ to the height you need.
“艰难之路唯勇者行”,可翻译为:when the going gets tough, the tough get going.
humanities可解释为: he humanities are academic disciplines that study aspects of human culture, using methods that are primarily anaytical, critical, or speculative, which are distinguished from the mainly empirical approaches of the natural sciences. the humanities, also called social sciences, include history, anthropology, communication studies, law, language, literature, philosophy, religion, music and theater, etc.
invest . with sth.的意思是,把某物扔给某人
after driving for thirty miles, she suddenly realized that she in the wrong direction.
on his next birthday he married for ten years.
earthquakes occur without warning; however, it is claimed that some animals can feel earthquakes ( ) occurrences because of their highly sensitive organs.
it is ( ) for every family to make earthquake emergency plans
people used to think the development of electronics may ( ), but now more and more letters and documents travel electronically.
ford tried iding the labor,each worker _________ a separate task.
the article opens and closes with descriptions of two news reports,each one major point ( ) the other.
choose the appropriate words or expressions to finish the sentences. when the police caught up with him, mr. foster had to ______ that he’d broken the speed limit.
guess the meaning of the underlined idiomatic expressions in the following sentences. with a knot in the pit of my stomach, i conquer my fear and ask, “hey, how about lunch after class on friday?”
for the body part: a long journey of love, the author writes in _____ sequence.
valentine’s day on february 14 is a holiday of love and romance usually by exchanging valentines or love tokens between lovers. 应该翻译为: 2月14 情人节是一个充满爱情和浪漫的节日,恋人之间通常都会交换情人卡和爱情信物。
on qixi festival, girls would also beg weaving maid for some wisdom for a happy marriage. 应该翻译为: 在七夕那天,姑娘们会向天上的织女祈求智慧,以获得美满姻缘。
the national bureau of statistics will release a series of economic indicators, including inflation, investment and social .
the stock price fluctuations have sparked the investor's concern about insider trading and market .
according to a report, a 47 percent of the british population has admitted to cheating on a partner.
nowadays, the problems faced by teachers derive from the belief that the teachers' task is to fill students' heads with the information they need to know. 应翻译为:现在,老师们面临的问题来自于一种观念,那就是人们认为老师的任务就是往学生的大脑里填满他们需要知道的信息。
choose the chinese expressions which match the english ones. messages at odds with each other ( )
a strong police force has been placed between the two _____ groups in village to prevent fighting and killing.
though many things have been changed culturally, there is a commitment and sense of responsibility that have not been _____ in today’s society.
people are concerned about the environment issue because air and water pollution not only affects everyone’s health but also makes it difficult for businesses to ______.
you will ______ for not learning english; you never know how much you will miss without being able to speak english.
instead of ignoring or envying successful students, i made it my mission to _____ the mysterious causes of their success and greatness.