【答案解析】我们并不试图行医，而是向我们的客户提供关于各种医疗问题的详尽信息。
[解析]
We are not trying to practice" medicine. We are trying to give consumers detailed information on their various health care issues.
【正确答案】
【答案解析】美国和日本的研究人员发现天气与海洋情况存在着密切的联系。
[解析]
American and Japanese researchers have discovered a strong connection between weather and conditions in the ocean.
【正确答案】
【答案解析】世界最大的商业飞机制造商波音公司宣布其新型777喷气式客机今年的新订单价值达180亿美元。
[解析]
Boeing, the world"s largest commercial airplane maker, announced it has 18 billion dollars in new orders this year for its new 777 jetliner.
【正确答案】
【答案解析】协议标志着中美长达13年痛苦谈判的终结。
[解析]
The agreement marks the end of thirteen long and often painful years of negotiations between China and the United States.
【正确答案】
【答案解析】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。
[解析]
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.