3．How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the US．
For some parents，the Internet seems like a jungle，filled with danger for their children．But jungles contain wonders as well as dangers and with good guides，some education and a few precautions （預(yù)防），the wilds of the Internet can be safely navigated （航行）．"Kids have to be on-line．If we tell our kids they can't be allowed to surf the Internet，we're cutting them off from their future，"said an expert．
Most kids have started to use search engines．Many of them are great for finding tons of interesting Internet sites，and they can also locate places where you might not want your kids to go．There are search engines designed just for kids．A certain software contains only sites that have been selected as safe．The most popular way would be to use what is known as a"content screener （過濾）"．But this can't be wholly reliable（可靠的），and the best thing parents can do is to talk to their kids and let them know what is Ok or not OK to see or do on the Internet．Another way is that mum or dad is nearby when the child is surfing the Internet．
A few other tips：
●Don't put the PC in a child's room but keep it in an area where mum or dad can keep an eye on things．That also makes the Internet more of a family activity．
●Ask your child what he or she has been doing and about any friends they make on-line．
●Tell your child not to give on-line strangers personal information，especially like address and phone number．
●And tell your children never to talk to anyone they meet on-line over the phone，send them anything，accept anything from them or agree to meet with them unless you go along．
39．What is the main subject about the passage？C
A．Opposing children's going on-line．
B．Internet in America．
C．American children going on-line．
D．Appreciating the Internet．
40．Which of the following is right according to the passage？D
A．Surfing the Internet is the best way of educating children．
B．Using a content screener is most reliable for keeping children having ways to the Internet．
C．Searching engines can replace parents to select materials fit for them．
D．Children's not having chances to go to the Internet may block（阻止） their progress．
41．According to the passage，we can infer thatB．
A．softwares fit for children want programming
B．the Internet contains a lot of harmful sites
C．the Internet will develop better
D．a(chǎn) child who is on-line is in danger．
分析 本文是一篇科教類閱讀，文章主要講述了因特網(wǎng)對孩子既有利也有害．由此告訴父母們應(yīng)該如何去保護他們的孩子免受不良網(wǎng)站的侵害，以及如何讓孩子遠離那些不健康的網(wǎng)絡(luò)資料．
解答 39----41 C D B
39．C主旨判斷題．文章的第1段就是主題句．根據(jù)第一段How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the U．S．可知在鼓勵那些愛好上網(wǎng)的孩子利用網(wǎng)絡(luò)資源的同時怎樣避免他們接觸到網(wǎng)上的不良內(nèi)容，這個問題在美國已經(jīng)討論了很久．由此可知，本文的主題是：美國孩子上網(wǎng)．故選C．
40．D理解判斷題．從文章內(nèi)容來看，A、B、C三項明顯與題意不符．根據(jù)第二段If we tell our kids they can't be allowed to surf the Internet，we're cutting them off from their future．可知如果我們不允許我們的孩子上網(wǎng)，我們或許正在阻礙他們的未來．故選D．
41．B推理判斷題．根據(jù)第三段Most kids have started to use search engines．Many of them are great for finding tons of interesting Internet sites，and they can also locate places where you might not want your kids to go．可知很多孩子已經(jīng)開始使用搜索引擎．他們發(fā)現(xiàn)了一些有趣的網(wǎng)站，但父母并不希望他們?nèi)g覽這些網(wǎng)站．由此推知，因特網(wǎng)可能包含一些不好的網(wǎng)站．故選B．
點評 本文考察學(xué)生的理解推斷能力以及細心程度，只要抓住文章的關(guān)鍵詞，采用尋讀的方法查找細節(jié)，就能找到正確答案．
