1 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

In today’s Science class, we learnt that human beings have five senses. Our teacher, Mr. Smith, asked us to find out    1    plants have senses, too. After some research, I found that,     2    (like) human, plants have only one or two senses.

Some plants can see the light from the sun, and grow towards    3    . What is    4    (amaze) is that plants    5    like eating small insects can sense the soft touches of the insects on their leaves. After they sense the insects, they move their    6    (leaf) all of a sudden to catch them. It has also been discovered that some plants can feel whether the animals around them want to hurt them or not. No one really knows how the plants can do this. The results of a recent experiment    7    (carry) out by some Italian and German scientists are amazing.

It    8    (observe) that when some plants sense dangerous insects, they give    9    a kind of smell for protection—the smell can attract other insects in the distance which can kill the dangerous ones.

I never    10    (know) plants were so clever.

2 . Seen any unseasonably early daffodils（水仙花）showing their faces yet? UK spring flowers are opening nearly a month earlier than they did before the mid-1980s, due to climate change.

That is the conclusion of a study of nearly 420,000 observations of the first flowering date of 406 plants from a UK citizen science project called Nature's Calendar. It has records dating back to 1753 from gardeners and naturalists, as well as bodies such as the UK's Royal Meteorological Society.

UIf Buntgen at the University of Cambridge and his team found that plants were opening their flowers 26 days earlier on average in the years after 1986 than they did before. They picked that year as it was the mid-point in the data set-where they had about the same number of observations before and after-because there were many more recent records than earlier ones.

The analysis included records of all plants, whatever time of year they flower, but most of them(like the daffodils) bloom in spring. “It is likely that the influence of climate change will be greater for spring-flowering plants, where the usual beginning of warmer temperatures that would cause flowering starts earlier,” says a spokesperson for the UK's Royal Horticultural Society.

There was a bigger advance in the dates of the first blooms for smaller plants, with those less than 20 centimeters high flowering an average of 32 days earlier in the years after 1986 than they had historically.

In any year, flower opening times were closely connected with the average temperature of the months from January to April. “If it's warmer, it's an earlier beginning. If it's cooler, it's a later one,” says Buntgen. The average maximum temperature across those four months rose by 1.1℃, comparing the period from 1950 to 1986 with the years after 1986.

“The change could hurt insects, birds and other wildlife that has evolved to sync with（同步）the flowering of certain plants,” says Buntgen.

1. What can we know about the study?

A．It dated back to 1753.

B．It was based on a large amount of data.

C．It was conducted by gardeners and naturalists.

D．It only covered records of plants blooming in spring.

2. Why did researchers pick the year 1986?

A．It was in the middle of the data set.

B．It was a memorable day for Ulf Buntgen.

C．It was the first year to record flowering date.

D．It was in 1986 that spring flowers bloom earlier.

3. What will be discussed in the following paragraph?

A．The influences of flowers’ early blooming.

B．Measures to be taken to stop climate change.

C．Further study to find the reason for flowers’ early blooming.

D．How creatures adapt to the change of flowers’ early blooming.

4. Where can we probably find the text?

A．In a guidebook.

B．In a science fiction.

C．In a geography textbook.

D．In a science magazine.