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On Sept 5, China’s 13th scientific expedition(科学考察) to the Arctic Ocean(北冰洋) reached the North Pole region(北极点区域). You may want to know: What’s the difference between doing research(研究) in the Arctic(北极) and Antarctica(南极)?

Research in the Arctic is difficult but it is easy in Antarctica. Antarctica is mainly land. So scientists can set up research stations(站点) on the land. However, the Arctic is mainly an ocean(海洋). Scientists can only set up drifing(流动的) stations or stations on boats in the Arctic.

There are also other differences between the two poles.

The Arctic is at the north end of Earth. Canada, Norway, Russia and five other countries have land there. Antarctica is at the south end of Earth. There are no countries there. People from all countries and regions can go there.

Antarctica is very cold. The winds at the South Pole are very strong. They blow away(吹走) the winds from warm places. But winds at the North Pole are not that strong. They mix(混合) with air from warm places.

1．What do we know from Paragraph 1?

A．September is the best time to go to the Arctic.

B．China did 12 scientific expeditions to the Arctic Ocean before Sept 5.

C．Thirteen Chinese scientists are in the Arctic.

D．The scientists are studying the difference between the Arctic and Antarctica.

2．Why is it difficult to do studies in the Arctic?

A．Because it is mainly land.

B．Because there are many research stations.

C．Because there are many boats in the Arctic.

D．Because scientists have to use boats as research stations.

3．Which of the following is TRUE about Canada?
a. Part of it is in the Arctic
b. It is at the south end of Earth.
c. People there can go to Antarctica.
d. It has land in Antarctica

A．ab

B．ac

C．bc

D．bd

4．Why is the Arctic not very cold?

A．Because there is air from warm places.

B．Because there is more water.

C．Because the winds there are strong.

D．Because it is south of Antarctica.

5．What is the passage mainly about?

A．Chinese scientists’ studies of the Arctic.

B．Research stations in the Arctic and Antarctica.

C．Differences between the Arctic and Antarctica.

D．The weather in the Arctic and Antarctica.