[单项选择]The Great Lakes between the US and Canada are the largest bodies of fresh water in the world. For a long time, people lived happily beside the Lakes until the countries began to build factories along the shores. Pollution was killing the Lakes; pretty soon, the Lakes’ ecosystem was not right any more. Scientists knew something had to be done. So did the government. They learnt it was important to keep the ecosystem of the Lakes healthy and strong. If the Lakes dried up, the whole world would feel it. Many areas would become deserts and many animals would lose their homes and maybe die out. As a result, they set up a lab called the Great Lakes Environmental Research Laboratory to solve the problem.

The largest bodies of fresh water are between the US and Canada.
A. Right.
B. Wrong.
C. Doesn’t say.

[单项选择]The Great Lakes between the US and Canada are the largest bodies of fresh water in the world. For a long time, people lived happily beside the Lakes until the countries began to build factories along the shores. Pollution was killing the Lakes; pretty soon, the Lakes’ ecosystem was not right any more. Scientists knew something had to be done. So did the government. They learnt it was important to keep the ecosystem of the Lakes healthy and strong. If the Lakes dried up, the whole world would feel it. Many areas would become deserts and many animals would lose their homes and maybe die out. As a result, they set up a lab called the Great Lakes Environmental Research Laboratory to solve the problem.

People lived happily beside the Lakes before factories were built along the shores.
A. Right.
B. Wrong.
C. Doesn’t say.

[简答题]the Great Lakes region

[判断题]

The Erie Canal joined the Great Lakes with the Hudson River.

[单项选择]A great difference between American social customs and those of other countries is the way in which names are used. Americans have little concern for "rank", especially socially. (76) Most Americans do not want to be treated in any especially respectful way because of their age or social rank; it makes them feel uncomfortable. Many Americans even find the terms "Mr. ", "Mrs." or "Miss." too formal. People of all ages may prefer to be called by their first names. "Don’t call me Mrs. Smith, just call me Sally." Using only first names usually indicates friendliness and acceptance. However, if you do not feel comfortable using only first names, it is quite acceptable to be more formal. Just smile and say that after a while you will use first names but you are accustomed to being more formal when you first meet someone.
Very often, introductions are made using both first and last names: "Mary Smith, this is John Jones." In this situation you are free to decide whether to call th
A. The way names are used in America is different from those of other countries.
B. Many Americans are used to being called by their first names.
C. It shows friendliness and kindness to use only first names.
D. When you talk to people in the United States, you have to use their first names.