Scientists in the U.K. are surprised at how many flowers are open this winter. Usually, about 25 different flowers are open. This year, scientists found 368. Some are five months early. This is because the winter became warm. Britain had its warmest year this year. A scientist said: "This year, the flowers made us surprised." 

The scientist said when warm winters come, the flowers open. Usually, the snow stops flowers from opening, but not this year. The first flowers to open were daisies(雏菊). Britain said: "All months became warm except August, and this was the warmest year for the UK."

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1.What is the best title for the passage?

A Flowers surprised Britains in winter

B Flowers in the U.K.

C Warm winter surprised Britains

D How to make flowers open

解析：选A。A 文章标题题。A项“暖冬大量花开令人惊异”契合文章内容，故选A。

2.Scientists in the U.K. are surprised at how many flowers are open this__________.

A spring

B summer

C autumn

D winter

解析：选D。D 细节理解题。根据第1段第1句Scientists in the U.K. are surprised at how many flowers are open this winter.可知，故选D。

3.How many kinds of flowers are open this year?

A 25

B 52

C 368

D 386

解析：选C。C 细节理解题。根据第1段第3句This year, scientists found 368.可知，故选C。

4.What made so many flowers open this year?

A Cold winter.

B Warm winter.

C Warm spring.

D Cold spring.

解析：选B。B 综合理解题。根据第1段第6句This is because the winter became warm.可知，故选B。

5.Which is RIGHT?

A Some flowers were open six months early this year.

B The snow stops flowers from opening this year.

C The first flowers to open were daisies this year.

D It is very warm all the year round in the U.K.

解析：选C。C 内容理解题。根据第2段第三句The first flowers to open were daisies(雏菊).可知，故选C。