单选题 The United States has many different {{U}}
{{U}} 1 {{/U}} {{/U}}of climates. {{U}} {{U}} 2
{{/U}} {{/U}}the west coast the temperature changes very little {{U}}
{{U}} 3 {{/U}} {{/U}}summer and winter, but the north central states
have a very different kind of climate. In those places people {{U}}
{{U}} 4 {{/U}} {{/U}}light clothing during the summer and they need
to have wool or fur clothing in winter. In the southwest the climate is
pleasantly warm during the winter, {{U}} {{U}} 5 {{/U}}
{{/U}}the summer is unpleasantly hot. In the eastern part of the United States
summer temperatures are very different {{U}} {{U}} 6 {{/U}}
{{/U}}winter temperatures. Summers are usually hot, but winters are usually cold.
Spring temperatures are pleasantly cool. Years ago, people in
the cold part of the United States {{U}} {{U}} 7 {{/U}}
{{/U}}often get fresh vegetables and fresh fruits during the winter. Today,
{{U}} {{U}} 8 {{/U}} {{/U}}, trucks and trains carry fruits and
vegetables very quickly to all parts of the United States. In this {{U}}
{{U}} 9 {{/U}} {{/U}}, Americans "send their climates" to people in
{{U}} {{U}} 10 {{/U}} {{/U}}states.