问题 句型转换

改写句子按括号中的要求完成句子,每个空格填—个单词。(5分)

小题1:I like to ride my bike on the weekend.(改为否定句)

I               to ride my bike on the weekend.

小题2:Jane shopped online once a month last year.(对划线部分提问)

did Jane shop online last year?

小题3:Hector's mother said to him, "Don't drop litter in public.”(改写句子,句意不变)

Hector's mother      him not      _drop litter in public.

小题4:On my way home, Thomas came by in his car and picked me up.(改写句子,句意不变)

On my way home, Thomas drove by and      me a      

小题5:The teachers have offered more chances to students to learn from each other in the past  few months,.(改写句子,句意不变)

More chances have              for students to learn from each other in the past few months.

答案

小题1:don’t like

小题2:How often

小题3:asked  to

小题4:gave ride

小题5:been provided

题目分析

小题1:分析句意:在周末的时候,我喜欢骑自行车。改为否定句。分析:原句为一般现在时,主语是第一人称,因此,改为否定句借助助动词do, 故填:don’t like

小题2:分析句意:去年,简一个月网购一次。分析:对划线部分提问,时间频率,对频率进行提问时用how often.故填:How often

小题3:分析句意:赫克托的母亲对他说:“在公共场合不要乱扔垃圾。”分析:改写句子,句意不变。联系下文:考查固定句型:tell sb. not to do sth.告诉某人不要做某事。故填:asked  to

小题4:分析句意:在我回家的路上,托马斯开车过来,让我搭车回家了。分析:改写句子,句意不变。考查pick sb. up的同义短语give sb. a ride.搭车之意。故填:gave ride

小题5:分析句意:在过去的几个月里,老师已经为学生们提供了更多的相互学习的机会。分析:改写句子,句意不变。联系下文体现为被动词态,原句为现在完成时,因此,考查了现在完成时的被动词态,构成have/has been done(动词的过去分词)。 故填:been provided

单项选择题
单项选择题

Increasingly, historians are blaming diseases imported from the Old World for the great disparity between the native population of America in 1492--new estimates of which jump as high as 100 million, or approximately one-sixth of the human race at that time--and the few million full-blooded Native Americans alive at the end of the nineteenth century. There is no doubt that chronic disease was an important factor in the sharp decline, and it is highly probable that the greatest killer was epidemic disease, especially as manifested in virgin-soil epidemics.

Virgin-soil epidemics are those in which the populations at risk have had no previous contact with the diseases that strike them and are therefore immunologically almost defenseless. That virgin-soil epidemics were important in American history is ply indicated by evidence that a number of dangerous maladies--smallpox, measles, malaria, yellow fever, and undoubtedly several more--were unknown in the pre-Columbian New World. The effects of their sudden introduction are demonstrated in the early chronicles of America, which contain reports of horrible epidemics and steep population declines, confirmed in many cases by quantitative analyzes of Spanish tribute records and other sources. The evidence provided by the documents of British and French colonies is not as definitive because the conquerors of those areas did not establish permanent settlements and began to keep continuous records until the seventeenth century, by which time the worst epidemics had probably already taken place. Furthermore, the British tended to drive the native populations away, rather than to enslave them as the Spaniards did; so that the epidemics of British America occurred beyond the range of colonists’ direct observation.

Even so, the surviving records of North America do contain references to deadly epidemics among the native population. In 1616--1619 an epidemic, possibly of pneumonic plague, swept coastal New England, killing as many as nine out of ten. During the 1630’s smallpox, the disease most fatal to the Native American people, eliminated half the population of the Huron and Iroquois confederations. In the 1820’s fever ruined the people of the Columbia River area, killing eight out of ten of them.

Unfortunately, the documentation of these and other epidemics is slight and frequently unreliable, and it is necessary to supplement what little we de know with evidence from recent epidemics among Native Americans. For example, in 1952 an outbreak of measles among the Native American inhabitants of Ungava Bay, Quebec, affected 99 percent of the population and killed 7 percent, even though some had the benefit of modern medicine. Cases such as this demonstrate that even diseases that are not normally fatal can have destroying consequences when they strike an immunologically defenseless community.

Notes: disparity 差距。 virgin-soil处女地。 malady 疾病 chronicle 编年史。 tribute 贡品。 pneumonic plague肺鼠疫。confederation 同盟。 smallpox 天花。measles 麻疹。

According to the text, virgin-soil epidemics can be distinguished from other catastrophic outbreaks of disease in that virgin-soil epidemics()

A. recur more frequently than chronic diseases

B. involve populations with no prior exposure to a disease

C. usually involve a number of interacting diseases

D. are less responsive to medical treatment than are other diseases