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寒冬時節(jié)，李理和黑豹野生動物保護站的隊員們進行例行巡護。經(jīng)過多年的保護，北京黑豹野生動物保護站已成為候鳥遷徙的重要棲息地。

1 Those months during birds migration are among the busiest for Li Li， founder of the Black Leopard Wildlife Conservation Station， and his co?workers.

2 They need to monitor the number of birds in the reservoir， identify species and do health checks， and ensure they are not disturbed or hurt. They also need to prevent potential poachers， transfer weak or injured birds to veterinarians for treatment and provide food for the birds during bad weather， such as heavy snowfall that lasts for days. Li， who founded the wildlife conservation service in 2000， said his team has recorded more than 300 kinds of migratory birds.

3 The Black Leopard workers usually record about 30，000 to 40，000 migratory birds stopping in the reservoir every spring， but the number this spring is more than 60，000. That is because the birds， during their travel southwards， left Beijing early last year， as they found it too cold. So they spent more time in the warmer south before heading north later.

4 Recording the migratory birds is a small part of the Black Leopards very busy workload. The organizations work covers the mountainous suburbs between Hebei and northwest and southwest Beijing， which are rich in wildlife. It has set up about 110 infrared （紅外線的） cameras there and sends its members and volunteers to patrol the regions to survey biodiversity （生物多樣性）， guard against poaching and protect the cameras.

5 The 40?year?old， born and raised in a village， said life in the village had a major influence on the career he chose. “In the village there were greenhouses， crop fields and large fields of canola （油菜） flowers. My pastimes were climbing trees， watching how bird eggs hatched， how little birds grew， and how tadpoles turned into frogs.”

6 The team， which lacked professional know?how and wildlife protection skills， trained with the Wildlife Conservation Society from 2007 to 2013 and took part in several of the societys projects in China. In 2014， the station joined the China Wildlife Conservation Associations service to protect wild birds and became a partner of the World Wide Fund for Nature.

1. What does the second paragraph mainly talk about？

A. Lis team management. B. Major work done by Lis team.

C. Birds migration time. D. Types of migratory birds.

2. What can be inferred from paragraph 3？

A. About 3，000 migratory birds stop in the reservoir each spring.

B. Migratory birds reduce every year.

C. The number of migratory birds this year increases.

D. Migratory birds spend more time in the north than in the south.

3. Which of the following is part of the Black Leopards work？

A. Visiting illegal hunters. B. Setting up special cameras.

C. Forecasting bad weather. D. Living in mountainous areas.

4. By what was Lis career choice influenced？

A. His team workers encouragement. B. His education levels.

C. His parents advice. D. His life in the village.

Difficult sentence

That is because the birds， during their travel southwards， left Beijing early last year， as they found it too cold. 那是因為在去年，這些鳥在向南遷徙時，早早地離開了北京，因為它們發(fā)現(xiàn)北京太冷了。

【點石成金】該句中，because引導表語從句，as引導原因狀語從句，意為“因為”。