18．Ever tried taking smart drugs（藥） to perform better in exams？They certainly work．Before last summer's exam，a few of my classmates，only out of curiosity，took a large amount of Modafinil，a drug normally used for narcolepsy（嗜眠發(fā)作癥）．Guess what？While I was feeling sleepy，bored by homework，my classmates were more focused．
Modafinil is a smart drug that gives a user a feeling of staying awake for hours．It also sharpens the mind，improves memory and helps problem-solving．
But it does more than just keeping you awake．It disturbs your mental（神經(jīng)的） system，making you do what you are doing with all efforts．You just don't want to do anything else but do homework all the time non-stop．
A recent study discovers that healthy people use smart drugs，like Modafinil，to get down to and complete tasks they have been putting off，because these tasks seem more enjoyable when taking these drugs．This might sound like what a stressed（有壓力的） student wants．However，the pills have some side-effects．
"At present no evidence shows that these drugs are safe in healthy people，"as a medical expert puts it，"Ordering online，though easy，is a dangerous way to get drugs．You never know what you're actually buying．"
In my experience，Modafinil changes people's behaviour too．Over those weeks my friends became different people-in turn strange，cold．Even eating became"a waste of time"and so did conversation．
A survey found that of those who had tried smart drugs before，92% would do so again．My friends say they'd happily do so without considering the practice a form of cheating．
I admit I was curious-but not enough to try it．Seeing the strange behaviour of other users，I feel a little bit upset and frightened．Modafinil may promise to change your grades，but it might also change the way you act．Don't say you haven't been warned!
66．According to the author，his classmates took Modafinil for the purpose ofB．
A．escaping from reality
B．getting better exam results
C．staying awake
D．leading an active life
67．Taking the smart drug can lead toD．
A．cheating in the exam
B．dropping out of school
C．behaving better than before
D．getting the habit of taking it
68．What does the author think of his classmates'taking the smart drugs？A
A．Worrying．
B．Inspiring．
C．Acceptable．
D．Reasonable．
69．Which statement about Modafinil is wrong？D
A．Modafinil sharpens the mind and helps problem-solving．
B．Modafinil more than just keeps you awake．
C．Modafinil has some side effects．
D．Modafinil is safe in healthy people．
70．The passage is probably written toD．
A．Teachers B．Doctors C．Scientists D．Students．
分析 本文屬于說明文閱讀，作者通過這篇文章主要向我們敘述了Modafinil這種藥的藥效，有些要考試的人在吃了以后特別愿意復(fù)習(xí)，非常精神不愿意停止學(xué)習(xí)，并且能夠提高自己的成績(jī)，但是它也有副作用，長(zhǎng)期服用會(huì)起依賴的作用，最后表明作者的觀點(diǎn)不贊成吃這種藥．
解答 BDADD
66．B．細(xì)節(jié)理解題．根據(jù)文章第一段Ever tried taking smart drugs to perform better in exams，可知大部分學(xué)生選擇去吃這種藥是為了在考試中表現(xiàn)得更好，得到一個(gè)更好的成績(jī)，故選B．
67．D．推理判斷題．根據(jù)文章倒數(shù)第二段"A BBC survey found that of those who had tried smart drugs before，92% would do so again"，凡是服用過這種藥物的人絕大部分會(huì)繼續(xù)服用，可推測(cè)這種藥物會(huì)使人上癮．故選D．
68．A．細(xì)節(jié)理解題．根據(jù)文章最后一段"Seeing the strange behavior of other users，I feel a little bit upset and scary"作者對(duì)于其他使用者的表現(xiàn)感到有點(diǎn)沮喪和恐懼．可判斷作者對(duì)這種藥物的作用是擔(dān)憂的，故選A．
69．D．細(xì)節(jié)理解題．根據(jù)文章第五段"At present no evidence shows that these drugs are safe in healthy people，可知現(xiàn)在還沒有證明這種藥是安全的，故選D．
70．D．細(xì)節(jié)理解題．根據(jù)文章第一段Ever tried taking smart drugs to perform better in exams？可知大部分人選擇去吃這種藥是為了在考試中表現(xiàn)得更好，因此可知這篇文章是寫給學(xué)生的；故選D．
點(diǎn)評(píng) 學(xué)生需要認(rèn)真閱讀原文，把握文章大意，對(duì)文章脈絡(luò)有整體的了解，能仔細(xì)查找文中細(xì)節(jié)，并能根據(jù)文章內(nèi)容進(jìn)行合理的推測(cè)判斷．
