21. What did Jessie learn on August 31?

A. Students in Chicago prefer shopping.

B. People in Chicago sleep less than people in Shanghai.

C. Streets in Chicago are less busy than those in Shanghai.

D. Business hours in Chicago are shorter than those in Shanghai.

22. How do American students behave in class?

A. They express their opinions directly.

B. They show no respect for their teacher.

C. They try to attract the teacher's attention.

D. They seldom cut in on the teacher's speech.

23. When meeting a stranger, people in Chicago seem to be _____.

A. shy B. nervous C. communicative D. defensive

24. What does the text mainly tell us?

A. A girl's experience of culture shock in a foreign country.

B. The differences between China and America.

C. How to make friends with foreigners.

D. How to live a happy life abroad.

　　Allan Pease has been known internationally as "Mr. Body Language" since his book on the subject became a multi-million best-seller all over the world.

Allan started his sales career at age 10 selling rubber sponges (橡胶海绵) door-to-door after school to earn pocket money. He began writing and developing his own techniques of selling at age 18. By 21 he was the youngest person ever to sell over $1,000,000 of life insurance in his first sales year and at 24 achieved membership in "International Top 20" for multi-million dollar sales - the youngest ever to do it. At 29 he was a manager and partner in Australia's largest Life Insurance Brokerage and was responsible for $103,000,000 of insurance sales in one year before becoming a full-time speaker.