问题 问答题 简答题

为什么芽孢有很强的抗热性和抗逆性?

答案

参考答案:

含水量低,壁厚而致密,芽孢中的酶分子量小,比较耐热,芽孢处于休眠状态,代谢性低

完形填空

.

Section D

Directions: Read the passage carefully.  Then answer the questions or complete the statements in the fewest possible words.

(E)

In many corners of the world, mass malnutrition is a deadly threat to people’s life.  It is plainly defined as a state of insufficiency of food for the population, where the majority of the people do not obtain enough food calories (卡路里) to meet the lowest needs for support of physical work and for maintenance of health.  Compared with wars or natural disasters like earthquake or flood, mass malnutrition is rather an unnoticeable health killer, which escapes enough public attention.

In Latin America, as in other places, the frightening protein-shortage disease kwashiorkor has been said to take toll of thousands of children, greatly affecting the area’s child population and leaves many more children in terribly poor health.  The reason for the problem might lie in the traditional diets in the area which are not balanced in nutrition.  Here people keep their eating pattern year after year without the knowledge of what these eating habits are doing to themselves and to future generations.

In these poor areas, in stead of thoroughly altering the local people’s long-term habits, the best way might be to find food substitutes which could meet nutritional needs.  Mixtures of vegetable proteins, like soybeans and peanuts could provide cheap and useful protein where meat, eggs and milk are not within economic reach of large groups in population.

Efforts could also be made to increase the agricultural productivity in some areas, where mass production of vegetable protein crops could bring life-saving nutrition to local people.  Being used wrongly, large areas of land now are devoted to luxurious entertainment constructions, such as golf course or riding field, which are targeted at a small number of rich people.  But isn’t a large area of productive planting land more acceptable and down-to-earth a choice to these countries suffering from mass malnutrition right now?

(Note: Answer the questions or complete the statements in NO MORE THAN 10  WORDS)

81. What is mass malnutrition?

___________________________________________________________________________

82. What does the underlined word “take toll of” probably mean?

___________________________________________________________________________

83. People can most effectively solve the mass malnutrition problem in some developing areas by ___________________________________________________________________________

84. It would be wise to use large areas of planting land for____________________________

___________________________________________________________________________

阅读理解

Like a growing number of young women in Vietnam’s northern part city of Haiphong, Pham Thi Hue was infected with HIV by her husband, one of the town’s many drug users.But instead of being shamed into silence, as Vietnamese with HIV and AIDS are, the 25-year-old tailor and mother of one went public, appearing on television and at conferences.Her business suffered and her neighbors insulted (辱骂)her, but Hue has now become the public face of Mothers and Wives, an HIV/ AIDS support group established in Haiphong by a Norwegian nongovernmental organization and her neighborhood’s People’s Committee.Last year, she founded a smaller group named after a local flower.People who need advice on treatment or help preparing bodies for burial can dial a hot line and get assistance from able and sympathetic(同情的)HIV victims.“We gather to support each other,” Hue says.“When we are sick, what we need most is encouragement and comfort from people who understand our situation and are willing to share our happiness, as well as our sadness.”

On a hot and damp night last month, Hue welcomed into her small home a very thin woman, also a tailor, who was HIV positive.The woman tearfully told Hue that she had not told anyone about her condition, fearing that she would lose customers and that her daughter would be insulted at school.Hue became the wise elder, offering medical and personal advice.

40.What did Pham Thi Hue do after she was infected with HIV?

A.She kept silent

B.She worked as usual

C.She stayed at home and cried every day.

D.She went public and gave help to others.

41.It can be inferred from the passage that the group Pham Thi Hue founded is made up of____.

A.drug users                                      B.HIV victims

C.all kinds of patients                          D.poor people

42.From the passage we can learn that Pham Thi Hue is a woman who is_______.

A.weak and kind                                 B.foolish and idle

C.brave and helpful                              D.cautious and energetic