Illegal aliens are people living in the U.S.A with proper__1__authorization. Many entered the country by sneaking acrossthe border. Others came on temporary student or visitor visasand did not leave until their visas were expired.__2__ Most illegalaliens want to stay in the U.S.A. because employmentopportunities are so much great than in their native country.Since illegal aliens try hard not to be discovered by thegovernment, it is possible to get an __3__ accurate count of them. Recent estimates ranged from__4__ 2.5 million to as high as 12 million. In 1986, the United States government adopted a newlaw affected illegal aliens— __5__ the Immigration Refrom and Control Act. This law wasdesigned to accomplish two main goals:1) to allow illegal aliens who have been living in the countrysince __6__ January, 1982 to gain legal status if they applied by May 4,1988; and 2) toencourage others from coming into or __7__ staying in the country illegally by making difficultfor__8__ undocumented people to find employment. The law prohibits American employers fromhiring illegals and providing for severe penalties—fines and even imprisonment—__9__ if they doso. This new law has helped large number of__10__ formerly illegal aliens to become legal residents.But it also forces employers to check on all prospective employees who look or sound foreign tobe sure that they have documents allowing them to work. This may discourage some employersfrom hiring any immigrants.
參考答案及解析:
1. with—without。根據(jù)illegal aliens的定義，應(yīng)該是people livingin the U.S.A without proper authorization
2. until—when。從邏輯意義上來分析，是Others....did not leavewhen their visas were expired(當(dāng)簽證到期時(shí)他們也不離開美國)
3. possible—impossible。從上下文的說明判斷，要弄清楚到底有多少非法居住在美國的外國人，或得一個(gè)確切的數(shù)據(jù)是完全不可能的
4. ranged之前加have。因?yàn)槭侵竏id not leave until their visas were expired. Recent estimates而不是以往的estimates
5. affected—affecting。此處相當(dāng)于(a new law)which/that affect illegal aliens
6. have—had。用過去完成時(shí)，因?yàn)檎麄€(gè)句子討論的是過去的事，并且此處具體指country sinceJanuary, 1982 to gain legal status if they applied by May 4,1988
7. encourage—discourage。如果為encourage則與全文的邏輯和意義矛盾
8. 在difficult之前加it。making it difficult for undocumented people to find employment，其中it為形式賓語，實(shí)際賓語為不定式短語(for undocumented people)to find employment
9. providing—provides。provides for severe penalties與prohibits American employers from hiringillegals 為并列謂語，而不是與hiring illegals并列
10. number—numbers或在large之前加a。習(xí)慣為numbers of或a number of