单选题
{{B}}Text{{/B}} AIDS threatens not only lives but also-in poor
countries - economic development. By{{U}} {{U}} 1 {{/U}}
{{/U}}mainly at adults 20 to 49 years old, AIDS robs these societies{{U}}
{{U}} 2 {{/U}} {{/U}}some of their most productive citizens.
Ignorance and fear of the disease can disrupt families and communities and may
even{{U}} {{U}} 3 {{/U}} {{/U}}political relations between
nations. Because AIDS is a worldwide epidemic (传染病，流行病),
nothing{{U}} {{U}} 4 {{/U}} {{/U}}than a worldwide effort can
control and perhaps some day wipe the disease. Governments must{{U}}
{{U}} 5 {{/U}} {{/U}}by fully informing their citizens{{U}}
{{U}} 6 {{/U}} {{/U}}the epidemic and, most important, by telling
people{{U}} {{U}} 7 {{/U}} {{/U}}actions they can take to
prevent infection(感染). Public health agencies must also insure that blood
transfusions (输血) and{{U}} {{U}} 8 {{/U}} {{/U}}are safe. Those
already infected should receive{{U}} {{U}} 9 {{/U}}
{{/U}}attention so they do not spread the virus to others.
{{U}} {{U}} 10 {{/U}} {{/U}}, the U. S. government has committed
more than two billion dollars to fight {{U}}{{U}} 11 {{/U}}
{{/U}}AIDS in 1989 - including more than 600 million dollars for research. The
screening of blood{{U}} {{U}} 12 {{/U}} {{/U}}has already
ensured the safety of blood supplies in the U. S. , and American military
personnel are required to take{{U}} {{U}} 13 {{/U}}
{{/U}}blood tests. Public health groups have carried{{U}} {{U}} 14
{{/U}} {{/U}}AIDS education programs aimed particularly at
homosexuals,{{U}} {{U}} 15 {{/U}} {{/U}}addicts, and others
whose behavior makes them highly susceptible (易受影响的){{U}} {{U}} 16
{{/U}} {{/U}}the virus. U. S. government agencies are also{{U}} {{U}}
17 {{/U}} {{/U}}public health authorities throughout the developing
world in their efforts to{{U}} {{U}} 18 {{/U}} {{/U}}the spread
of the AIDS virus and to treat those afflicted with the disease.{{U}}
{{U}} 19 {{/U}} {{/U}}the rapid spread of the disease and the
number of people now infected, the battle against AIDS will be difficult to win.
But it's a battle the world cannot{{U}} {{U}} 20 {{/U}} {{/U}}to
lose.
单选题
A. striking
B. sticking
C. stirring
D. stinging
【正确答案】
A
【答案解析】[解析] 这道题主要是区分几个词的意义：strike是击中的意思，而且其后跟at，是固定搭配；stick后一般跟to，意为“坚持．．．”，与本题的意思不符；stir意为“抖动，激发”，后接 up；sting是“刺”。请再看一个例子：A storm strikes at this town．这个小镇遭到了暴风雨的袭击。
【答案解析】[解析] 从固定搭配角度来考虑，nothing后面只能接more和less。各自的意义和使用也当然不一样：nothing more相当于only，“只有，不超过”；nothing less相当于just，“正好，只有”，后面接几个名词。为了更清楚地说明二者的区别，看以下例子：He has nothing more than five dollars in his pocket．他口袋里只有五美元了。Nothing less than hardworking can lead to success．唯有勤奋才能获得成功。中国学生在这两个词组上容易犯错误的主要原因是它们在翻译成中文时都以为“只有”，导致了混淆。但实际上，二者是完全相反的意义。区分它们最好的办法是记它们的英语解释。
类似这种情况的还有不少，我们在这再举一例，如：unless和in case也是一对难辨别的词组，在意义和使用上也令人头痛不已，很多人屡记屡错，屡做屡错。之所以出现这种情况是因为没有掌握记忆的特点，找到最佳的切人点。英语中，有很多的知识及用法光靠死记硬背是没什么效果的。如果我们能够在这变换一个角度，从其英语解释入手，也许就会迎刃而解：unless相当于if not；in case可用for fear that替代。请看例子：
1．You can by no means apply for this ______ you have much money．
2．You must bring more money with you ______ you need it．
第一题的大意是：没钱你就不要申请了。如果还不清楚，也可以说：如果你没钱，就不能申请这个了。所以，只能用unless。用其英语解释来替代更一目了然：You can by no means apply for this if you have no money.而for fear that显然是无法替代unless。第二题就只能用in case了。
这类词或词组属于基础词汇，使用频率高，考生又容易出错，出题者也很乐意考。
【答案解析】[解析] 需要what在这里作定语：告诉人们应该采取什么样的措施以防感染。为何不能用about呢?的确，tell．．．about也是个固定词组，原因是用了about，意义还是没有表达出来，语法上也存在缺陷。如果后面是(about)the right actions how．．，那就可以了。