题目内容
阅读并按要求完成各题．
（1）在化简
的过程中，小王和小李的化简结果不一样：
小王的化简过程如下：
原式=
=
=
．
小李的化简过程如下：
原式=
==
．
请判断谁的化简结果正确，并说明理由．
（2）已知
，求
的值．（结果保留根号）
解：（1）小李的化简结果正确．理由如下：
=|
-
|=-；
（2）x=
=
=
=-1，
原式=
•
=
，
当x=-1时，原式=
=3+．
分析：（1）根据二次根式的性质得到=|-|=-，由此可判断小李的化简结果正确．
（2）理由（1）的方法可化简x得到x=-1，再对分式进行通分、约分得到原式=，然后把x的值代入后解分母有理化即可．
点评：本题考查了二次根式的化简求值：先化简再代入求值；二次根式运算的最后，注意结果要化到最简二次根式，二次根式的乘除运算要与加减运算区分，避免互相干扰．也考查了分式的化简求值．
=|-|=-；（2）x=
===-1，原式=
•=
，当x=
-1时，原式==3+．分析：（1）根据二次根式的性质得到
=|-|=-，由此可判断小李的化简结果正确．（2）理由（1）的方法可化简x得到x=
-1，再对分式进行通分、约分得到原式=，然后把x的值代入后解分母有理化即可．点评：本题考查了二次根式的化简求值：先化简再代入求值；二次根式运算的最后，注意结果要化到最简二次根式，二次根式的乘除运算要与加减运算区分，避免互相干扰．也考查了分式的化简求值．
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阅读下面短文，根据所给语境，按要求完成下列各题。
Failure is what often happens. It is everywhere in our life. Students may fail in exams, scientists may fail in their research work, and players may fail in competitions. (A) Although failure happens to everyone, but different people’s attitudes(态度) towards failure are different.
Some people don’t think that their failure is an important thing at all. So they pay no attention to it. As a result, they will have the (B) failure later. Some people think they themselves are fools and lose their hearts in everything after they get failure. Then they(C)
their time and energy on useless things. At last, they may really be fools as they have thought.
（D）Other people are quite different from these two kinds of people mentioned above. Instead of being hopeless and lost, they draw a lesson from every failure and become more experienced. (E) they, after, will ,hard, in, work, be , the, successful , end. So we should draw a lesson from every failure and become more experienced.
【小题1】 (A)处句中有一处错误，请找出并改正。（可用文字叙述）
【小题2】在( B )、(C )处的横线上分别填上一个单词（B） （C）
【小题3】将(D)处句子译成汉语： 。
【小题4】 将(E)处的单词连成句子：
【小题5】请从下面的选项中给短文选个标题，将答案标号填在此横线上：
Failure is what often happens. It is everywhere in our life. Students may fail in exams, scientists may fail in their research work, and players may fail in competitions. (A) Although failure happens to everyone, but different people’s attitudes(态度) towards failure are different.
Some people don’t think that their failure is an important thing at all. So they pay no attention to it. As a result, they will have the (B) failure later. Some people think they themselves are fools and lose their hearts in everything after they get failure. Then they(C)
their time and energy on useless things. At last, they may really be fools as they have thought.
（D）Other people are quite different from these two kinds of people mentioned above. Instead of being hopeless and lost, they draw a lesson from every failure and become more experienced. (E) they, after, will ,hard, in, work, be , the, successful , end. So we should draw a lesson from every failure and become more experienced.
【小题1】 (A)处句中有一处错误，请找出并改正。（可用文字叙述）
【小题2】在( B )、(C )处的横线上分别填上一个单词（B） （C）
【小题3】将(D)处句子译成汉语： 。
【小题4】 将(E)处的单词连成句子：
【小题5】请从下面的选项中给短文选个标题，将答案标号填在此横线上：
| A．Draw a lesson from every failure | B．The attitudes towards failure |
| C．Failure is everywhere in our life | D．Failure is very important |