TUVALU, a tiny country in the Pacific Ocean, has asked for help as it fears it will be swallowed up by the sea.

Storms and huge waves are a constant threat and none of Tuvalu’s nine little islands is more than five meters above sea leavel, Salt water is already entering the country’s drinking water supply, as well as damaging plants that produce fruit and vegetable. 1___________

2______. Venice, a historic city in Italy best known for its canals, has sunk about 24 cm over the past 100 years. Experts say that it will have sunk another 20-50cm by 2050. A century ago, St. Mark’s Square, the lowest point in the city, flooded about nine times a year, Nowadays, it happens more that 100 times. While Venice is slowly sinking into the mud on which it stands, Tuvalu’s rising sea level is caused by global warming.

The average global temperature has increased by almost 0.5 centigrade degrees over the past century; scientists expect it to rise by extra 1-3 degrees over the next 100 years.

Warmer weather makes glaciers（冰川）melt, adding more water to the ocean. The warmer temperatures also make water expand, so it takes up more space, causing the sea level to rise. The sea level has risen about 10－25 cm in the last 100 years.

3______. Through burning coal, oil and gas, people have been increasing the greenhouse gases in the atmosphere, such as CO₂. This adds to the power of the greenhouse effect, making the planet even warmer.

Many scientists believe that, if the warming is not stopped, there will be huge climate changes. 4_______.

5________, the sea will swallow up millions of homes and the world will be flooded with “climate refugees” looking for somewhere to live.

A. The main cause of global warming is human pollution

B. Should this come true

C. Without urgent help, the country’s days are numbered.

D. But Tuvalu is not the first place to face sinking into the sea

E. The sea level could rise by one meter this century

F. people face a lot of pollution

G. much has been done about our planet

11    He said he never heard this word ______ in spoken English.

A use 　　　　　　　B. used 　　　　　　　 C. using 　　　　　D. to use

We should a________________ for someone to be the secretary.

--- Was it there ______ you put your bike to see your friend off?

--- I’m not sure. But when I got back, it was gone.

A. that　 B. which　　 C. while　 　 D. where

_______ a man waiting for you in the distance.

A. There must be　　　 B. There can　　 C. There must have　　 D. There has

In order to make our city green, __________.?

A.it is necessary to have planted more trees ?

B.many more trees need to plant ?

C.our city needs more trees ?

D.we must plant more trees ?

A celebration was held in Zhongshan Park _________ those who devoted their lives to the revolutionary cause.

A. in respect of　　　 B. with the purpose of　　 C. in memory of　　 D. in case of

I used to work in an office，which had a locust tree growing outside the window.It had grown into a tall tree and must have been there for a long time.The tree blocked the view and made the office seem dull.Unfortunately，this happened to be the room assigned(分配)to me，and I was depressed by it for quite some time.

When the first spring came，everything was green except the locust tree.I felt very happy because I had thought it had died!

One morning，when I opened the window for some fresh air，I unexpectedly smelt a familiar sweet scent floating into my office which I could not name.Suddenly，I realized it was the locust tree！The tree that I thought dead was in full bloom!

From then on，I usually came to the office very early to see dew(露珠)forming on the locust tree blossoms，and was eager to see spring again every year.

During summer，the green leaves provided shade protecting me from the harsh sunlight，but allowing enough light in to make it pleasant.In autumn，the leaves turned many different colors. Its beauty touched my soul.Many times，I thought to take photos but never did.Then，I had to leave in a hurry.Later in life，it became a great regret that I had not done so.

Actually，many times in our lives，we think we own something and thus do not value it.We don't feel regretful until we lose it one day！Moreover，sometimes，we have to accept the things we don't want and need to discover the hidden beauty to find unexpected joy!

1．The locust tree first attracted the author most by ________.

A．the way it blocked the view　　　B．its height

C．the smell of its flowers　　　　 D．its green leaves

2．In which season do you think the author paid the least attention to the locust tree?

A．Spring.　　　　 B．Summer

C．Autumn.　　　　 D．Winter.

3．Which of the following statements is true of the author according to the passage?

A．He would have regretted if the locust tree had died as he had thought it had.

B．The locust tree turned out to be a lovely memory for him.

C．He felt unhappy as he had forgotten to take the photos with him.

D．His work in the office changed with the seasons every year.

4．It can be inferred from the passage that ________.

A．the locust tree died soon after the author left the office

B．the author worked in the office for at least a few years

C．it was summer when the author took his job in the office

D．the weather was dry when the author first saw the tree

5．What advice does the author intend to give us?

A．Treasure what we've owned.

B．Look before you leap.

C．Treat everything calmly.

D．Never forget the past.

——Do remember to give Mary the money you borrowed.

——Yes, I will give it to her ____________I see her.

A. while　　　　 　 B. immediately　　　 C. suddenly　　　　 D. a moment

Is this the reason ______at the meeting for his carelessness in his work?

A．he explained　　　　　　 　　　　　 B．what he explained

C．how he explained　　　　 　　　　　 D．why he explained