单项选择题
听力原文：W: Good evening. I'm Roseanne, your flight attendant. Welcome aboard.
M: Hello, I've got seat A 6. I hope it's by a window so that I can see the view.
Where did this conversation probably take place?
A．On a train.
B．On a boat.
C．On a plane.
D．On a bus.
- A.
M:
B.
Where
C.On
D.
B．On
E.
C．On
F.
D．On
G.
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单项选择题
Computers in the United States（） .
A．used to be nice
B．used to be large and expensive
C．used to be heavy
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单项选择题
听力原文： I spoke yesterday about the construction of ancient Viking ships. Today I'd like to discuss the transocean voyages that the Norse made in these open boats-voyages made without compasses or charts. Somehow the Vikings managed to get across the North Atlantic and back home again. Although the shortest distance between the coast of Norway and Green- land is about 900 miles, the Vikings preferred to take a longer route south of Iceland and there-by avoid pack-ice. This was a voyage of well over one thousand miles. How did Norse sailors find land after days of sailing out of sight of land? well, experienced sailors used the relative position of the stars to help them navigate. The sun's position could also be noted, but it moves across the sky and its position alters a little every day, so it was not easy for the Vikings to use. However, even when out of sight of land, an experienced sailor could find in- formation. As there are landmarks on land, so there are at sea. Whales gathered in large numbers to feed at an area half a day's sail south of Iceland. Migrating birds on their annual flight were also helpful because they always followed the same route. So, geese flying between Britain and Iceland were of particular use to the Vikings. One Icelander also took ravens with him, releasing them until one day they didn't return. He followed their direction and found land. In 900 A. D, ingenuity had to take the place of technology.What is the main topic of the talk?A．Life in Norway during Viking(海盗)times.B．Different ocean routes taken by the Vikings.C．Methods used in Viking navigation.D．The importance of migrating geese in Viking navigation.
A.
What
B.Life
C.
B．Different
D.
C．Methods
E.
D．The
F. -
单项选择题
一种转基因的新品种水果有良好的口感和更丰富的营养，考虑到人们对转基因副作用的担忧，要采取一定措施来推广这种新品种水果。 以下哪项最有利于推广这种新品种水果?（）
A．加大宣传新品种水果广告的力度。
B．给出科学证据，证明这种新品种水果对人体可能的危害并不比同类水果大。
C．采取“薄利多销”的低销售策略。
D．已经在市场销售的其他转基因的水果并没有给人直接的危害。
