问题 阅读理解

Organic foods are produced according to certain production standards, meaning they are grown without the use of conventional pesticides, or chemical fertilizers and that they were processed without food additives. Livestock are raised without the routine use of antibiotics(抗生素)or growth hormones. In most countries, organic produce must not be genetically modified. They may also be required to be produced using energy-saving technologies and packaged using recyclable materials when possible.

Early consumers interested in organic food would look for non-chemically treated, fresh or minimally processed food.

They mostly had to buy directly from growers: “Know your farmer, know your food” was the motto. Personal definitions of what constituted ( 组成)“organic” were developed through first-hand experience: by talking to farmers, seeing farm conditions, and farming activities. Historically, organic farms were relatively small family-run farms — which is why organic food was once only available in small stores or farmers’ markets.

However, since the early 1990s organic food has had growth rates of around 20% a year. As of April 2008, organic food accounts for 1 - 2% of food sales worldwide. Currently organic food production is legally regulated. Many countries require producers to obtain organic certification in order to market food as organic.

Several studies have attempted to examine and compare conventional and organic systems of farming. The general consensus(共同看法)is that, in the short term, organic farming is less damaging for the following reasons:

● Organic farms do not release synthetic pesticides (合成农药) into the environment — some of which have the potential to harm soil, water and local wildlife.

● Organic farms are better than conventional farms at keeping diverse ecosystems, i.e., populations of plants and insects, as well as animals.        

● Organic farms are more energy efficient and produce less waste.

Another report published in March 2008 by The Organic Center claims that organic food is on average 25% more nutritious than conventional food.     

However, many critics believe that the increased land needed to farm organic food could potentially destroy the rainforests and wipe out many ecosystems. And organic products cost 10 to 40% more than similar conventionally produced products. Processed organic foods in supermarkets are 65% more expensive.

1. Early consumers knew what food was “organic” by _______.

A. firsthand experience                                     B. the “certified organic” label tag

C. its packaging                                                      D. examining its organic certification

2. We can infer that _______.

A. in America, organic food can only be bought in small stores or farmers’ markets

B. organic food is also available in large supermarkets at present

C. organic food is produced by large-scale farms

D. organic food is often beautifully packaged

3. According to the passage, organic food is considered as _______.     

A. junk food              B. delicious snacks               C. green food      D. conventional food

4. What is the main idea of the last paragraph?

A. The benefits of organic food.                               B. The cost of organic food.

C. The disadvantages of organic food.                   D. Organic food and conventional food.

5. Which of the following statements does NOT support the view that organic farming is more environment-friendly?

A. Organic food is generally thought to be more nutritious.

B. Organic farms are more energy efficient and produce less waste.

C. Organic farms are better than conventional farms at maintaining varieties of plants, insects and animals.

D. Organic farms do not release synthetic pesticides into the environment.

答案

小题1:A

小题2:B

小题3:C

小题4:C

小题5:A

填空题
问答题

使用VC6打开考生文件夹下的工程test22_3,此工程包含一个源程序文件test22_3.cpp,其中定义了用于表示考生的类 CStudent和它的派生类CGraduateStudent,但它们的定义并不完整。请按要求完成下列操作,将程序补充完整。 (1)定义CStudent的构造函数,函数含参数nm,它是char型的指针数据,请使用字符串函数将类数据成员name初始化。请在注释“//**1**”之后添加适当的语句。 (2)完成类CStudent的成员函数void addscore(double sc)的定义,将类数据成员score加上参数sc,请在注释“//**2**”之后添加适当的语句。 (3)添加类CGraduateStudent的成员函数void addpaper(int d)的定义,将int型的参数d的值加到类的数据成员paper上,请在注释“//**3**”之后添加适当的语句。 (4)调用对象sdt的成员函数addpaper使得该考生的论文数量变为10,将请在注释“//**4**”之后添加适当的语句。 输出结果如下: Student Hanson (Advisor:MichaelPhong) Total paper is 10 注意:除在指定位置添加语句之外,请不要改动程序中的其他内容。 源程序文件test22_3.cpp清单如下: #include<iostream.h> #include<string.h> class CStudent { private:char name[30];int code;double score; public:CStudent(char* nm) { //**1** }CStudent(){}void putname(char* nm){ strcpy(name,nm);}void putcode(int d){code=d;}void putscore(double sc){score=sc;}void getname(char* nm){strcpy(nm,name);}double getcode(){return code;)double getscore(){return score;}void addscore(double sc) { //**2** } }; class CGraduateStudent:public CStudent { private:char advisor[30];int paper; public:void putadvisor(char*nm){ strcpy(advisor, nm);}void getadvisor(char*nm){ strcpy(nm, advisor);}void putpaper(int d){ paper=d;} //**3**int getpaper(){ return paper;} }; void main() {CGraduateStudent sdt;sdt.putname("Hanson");sdt.putadvisor("MichaelPhong");sdt.putpaper(8);//**4**char csname[30];sdt.getname(csname);char caname[30];sdt.getadvisor(caname);cout<<"Student"<<csname<<endl;cout<<"(Advisor:"<<caname<<")"<<endl;cout<<"Total paper is"<<sdt.getpaper()<<endl; }