题目内容：

The United Nations Children’s Fund (UNICEF) has declared October 15 as Global Handwashing Day in 2005．The first Global Handwashing Day is on October 15 of 2008.Activities are planned over twenty countries to get millions of people in the developing world to wash their hands with soap. Global Handwashing Day is the idea of the Public-Private Partnership for Handwashing with Soap. Partners include the UN Children's Fund, American government agencies, the World Bank and soap makers Unilever and Procter and Gamble. The goal is to create a culture of hand washing with soap.

Hand washing can prevent the spread of disease. Experts say people around the world wash their hands but very few use soap at so-called critical moments. These include after using the toilet, after cleaning a baby and before touching food.

When people get germs on their hands, they can infect themselves by touching their eyes, nose or mouth. Then they can infect others.

The organizers say all soaps are equally effective at removing disease-causing germs. The correct way to wash is to wet your hands with a small amount of water and cover them with soap. Rub it into all areas, including under the fingernails. Rub for at least twenty seconds.Then, rinse well under running water. Finally, dry your hands with a clean cloth or wave them in the air. Soap is important because it increases the time that people spend washing. It also helps to break up the grease and dirt that hold most of the germs.And it usually leaves a pleasant smell,which increases the likelihood that people will wash again.

Washing with soap before eating and after using the toilet could save more lives than any medicine. It could help reduce cases of diarrhea(痢疾) by almost half. And it could reduce deaths from pneumonia and other breathing infections by one-fourth. Diarrhea is the second leading cause of child deaths, killing more than one and a half million children a year. Pneumonia is the leading cause, killing about two million children under five each year. Hand washing can also prevent the spread of other diseases.

50.We can learn from Paragraph 1 that _______.

A.the first Global Handwashing Day was held in 2005

B.many originations support the idea of Global Handwashing Day  

C.Global Handwashing Day was founded by many soap makers

D.the content of Global Handwashing Day is to wash your hand frequently

51.The underlined phrase “critical moments” in Paragraph 2 refers to _______.

A.the turning points    

B.schedules  

C.the arrangement of a time

D.the necessary parts in health

52.The main purpose of the story is to tell us ________.

A.hand washing is very important

B.to create a culture of hand washing with soap

C.germs can infect ourselves and others

D.soaps play an important role in everyday life

53.The last paragraph implies that ___________.

A.a soap is a kind of medicine to prevent a disease

B.it is important for children to wash hands in a correct way

C.Pneumonia kills about two million children each year

D.Diarrhea is the second leading cause of child deaths.