在上世纪，旅游业成为了最显著的经济和社会现象之一，而在下个世纪毫无疑问它仍将地保持这一地位。

(1)We are not trying to practice medicine. We are trying to give consumers detailed information on their various health care issues.
(2)American and Japanese researchers have discovered a strong connection between weather and conditions in the ocean.
(3)Boeing, the world’s largest commercial airplane maker, announced it has 18 billion dollars in new orders this year for its new 777 jetliner.
(4)The agreement marks the end of thirteen long and often painful years of negotiations between China and the United States.
(5)Tourism clearly counts as one of the most remarkable economic and social phenomena of the last century. It undoubtedly will keep this position for the century to come.

(1)More and more doctors will use computers for medical diagnosis and treatment. You will visit your doctor, and find that he uses a computer screen and visual information about your condition instead of his textbooks. Computers in your home will enable you to answer interactive questions about your health and show the alternative results which will affect you if you act in a certain way.
(2)For me, it was very risky at the beginning that I leave my home, leave my work, leave my dream, leave my family, leave my boyfriend to come here for nine months to share with eight different people, different backgrounds. Now that I’m here, I’m so proud. I’m delighted. I think my biggest challenge is to keep the same passion and the same enthusiasm that I had at the beginning. But it’s the most rewarding experience I have ever known.