At the very beginning of the passage, the author narrates a story of _______. A: BASE jumping B: bungee jumping C: paragliding D: rock climbing

_______ a considerable risk they will probably face, an increasing number of people are keen on running the risk of participating in extreme sports such as BASE jumping, rock climbing or skateboarding.

What kind of rock is the most widely distributed on earth? () A: Magmatite B: Sedimentary rock C: Metamorphic rock D: Igneous rock

标准以太网指的是 ( ) A: 10 BASE 5 B: 10 BASE 2 C: 10 BASE T D: 100 BASE T

（6-2）定义如下Base类，能在(1)处正确调用Base的构造方法。 class Base{ int x,y; Base(int x){} Base(int x,int y){ //(1)调用Base的构造方法 } }

如何能使程序调用Base类的构造方法输出"base constructor"; class Base{ Base(int i){ System.out.println("base constructor"); } Base(){  } } public class Sup extends Base{ public static void main(String argv[]){ Sup s= new Sup(); //One } Sup() { //Two } public void derived() { //Three } }

Little Kids Rock is solely devoted to the teaching of rock and pop in music education.

According to the structures, a terrace can be divided into several basic types, which are: A: accumulation terrace B: erosion terrace C: rock-base terrace D: buried terrace

在句子I’m your rock中， rock 的意思是 _____ 。

Alternative Rock, Punk Rock, Pop and Hip Hop are the popular music in the 90's.