Recently, some concerns have been raised about the health of the world's banana plants. Many media reports have said that bananas may completely disappear in the coming ten years.

Bananas are one of the world's most important food crops. They are also the fourth most valuable export. Bananas do not grow from seeds. Instead, they grow from existing plants. Bananas are threatened by disease because all the plants on a farm are copies of each other. They all share the same genetic weaknesses.

For example, the Cavendish banana is most popular in American markets. It is an important export crop. However, some kinds of fungus (真菌) organisms easily infect the Cavendish. Black Sigatoka disease affects the leaves of Cavendish banana plants. The disease is controlled on large farms by putting chemicals on the plant's leaves. Farmers put anti-fungal chemicals on their crops up to once a week.

Another fungal disease is more serious. Panama disease attacks the roots of the banana plant. There is no chemical treatment for this disease. Infected plants must be destroyed. Panama disease has affected crops in Southeast Asia, Australia and South Africa. There is concern that it may spread to bananas grown in the Americas. This could threaten an important export product for Central and South America.

The International Network for the Improvement of Banana and Plantain, whose headquarter lies in France, supports research on bananas. The group says that more research must be done to develop improved kinds of bananas.

The group says that fungal diseases mainly affect only one kind of banana. In fact, there are five-hundred different kinds of bananas. The United Nations Food and Agriculture Organization says the Cavendish banana represents only ten percent of world production.

The UN agency says farmers should grow different kinds of bananas. This protects against diseases that affect only one kind. Experts warn that disease may cause the Cavendish banana to disappear. This has already happened to one popular banana because of its genetic weakness against disease. (words: 335)

1.What does the passage mainly tell us?

A．Bananas are the world’s most important food crops.

B．There are five hundred different kinds of bananas.

C．The risk to a popular banana shows need to grow other kinds.

D．How to grow bananas in different countries.

2.Bananas are threatened by diseases because ___­­­­­­_______.

A．they have genetic weaknesses against disease.

B．they are one of the most valuable exports.

C．the only way to prevent it is to put chemicals on their leaves.

D．they grow from the seed

3.Panama disease__________.

A．doesn’t belong to fungal disease.

B．has spread to bananas in the world.

C．affects the leaves of banana plants.

D．destroys the bananas more seriously than Black Sigatoka disease.

4.We can infer from Paragraph 6 that ____________.

A．the center of the group is in the US.

B．the key to solving the disease is to research all kinds of bananas.

C．the Cavendish banana covers only a small part of the output of bananas.

D．each fungal disease affects five hundred different kinds of bananas.

5.According to the passage, which information is right?

A．The Cavendish banana can be mainly imported from North America and Europe.

B．Fungal diseases mainly affect the Cavendish banana.

C．The Cavendish banana won’t die out in the future.

D．Panama disease affects the leaves of banana plants.

What doomed the Titanic is well known, at least in outline. On a moonless night of April 15, 1912, the ship hit an iceberg in the North Atlantic ,with 1,500 lives lost.

A century later many people presented new theories to explain the real reason for the disaster. Now two new studies argue that rare states of nature played major roles in the disaster.

The first says Earth’s nearness to the Moon and the Sun — a proximity not matched in more than 1,000 years — resulted in record tides that help explain why the Titanic met with so much ice, including the fatal iceberg.

Recently, a team of researchers found an apparent explanation in the heavens. They discovered that Earth had come unusually close to the Sun and Moon that winter, enhancing their gravitational pulls on the ocean and producing record tides. The rare orbits took place between December 1911 and February 1912 — about two months before the disaster came about. The researchers suggest that the high tides refloated masses of icebergs traditionally stuck along the coastlines of Labrador and Newfoundland and sent them adrift into the North Atlantic shipping lanes.

And a second, put forward by a Titanic historian from Britain, contends that the icy waters created ideal conditions for an unusual type of mirage(海市蜃楼) that hid icebergs from lookouts whose duty was to watch carefully for  danger ahead and confused a nearby ship as to the liner’s identity, delaying rescue efforts for hours.

Most people know mirages as natural phenomena caused when hot air near the Earth’s surface bends light rays upward. In a desert, the effect prompts lost travelers to mistake patches of blue sky for pools of water. But another kind of mirage occurs when cold air bends light rays downward. In that case, observers can see objects and settings far over the horizon. The images often undergo quick distortions — not unlike the wavy reflections in a funhouse mirror.

Now, scholars of the Titanic are debating these new theories. Some have different opinions on it. Over all, though, many experts are applauding the fresh perspectives.  (words:353)

1.The underlined word "It" in the title probably refers to _______.

A．the Titanic         B．the record tide     C．the cause of the disaster   D．an unusual mirage

2.According to Theory First, what was the right chain of causes leading to the Titanic’s disaster?

① record tides’ forming and icebergs’ being refloated

② icebergs’ being drifted into the North Atlantic shipping lanes

③the Earth’s strange closing to the Sun and the Moon

④increasing of the gravitational force on the ocean

A．①→②→③→④    B．③→④→①→②    C．④→③→②→①    D．②→③→④→①

3.According to Theory Second, the disaster happened to the Titanic mainly because______.

A．the freezing weather made the watcher not be able to watch clear

B．the mirage on the sea attracted the watcher and made him forget his work

C．the high tides drove the icebergs float so fast that the watcher didn’t respond to them

D．the mirage made the watcher not find icebergs and a nearby ship delay rescuing

4.What is the chief function of the sixth paragraph?

A．to infer the possibility of the mirage appearing

B．to explain to the readers the ways of the mirage forming

C．to summarize the various kinds of the mirage

D．to analyze the conditions of the mirage arising

5.This passage is organized generally in the pattern of________.

A．comparison and contrast                  B．time and events

C．conclusion and proof                    D．definition and classification（分类)）

阅读下面短文并回答问题，然后将答案写到答题卡相应的位置(请注意问题后的词数要求)。

【1】Who says you need super power to save the world? On April 22, more than a billion people worldwide celebrated Earth Day by taking part in green activities in their communities. However, you needn’t wait until Earth Day. You needn’t be an adult, either! Every day, young people across the globe are doing their part to keep the Earth healthy and green. These are just a few kid heroes for the planet.

Manatee (海牛) minder

【2】When she was in second grade, Stephanie Cohen read about a baby manatee hit by a boat off the coast of Florida. Biologists saved the manatee. But caring for the sea creature was expensive. Stephanie took up a collection and raised 27 dollars in one day. Now 18, Stephanie still raises money to help these "Gentle Giants".

Goodbye paper bags

【3】When Adrienne Smith, 15, was in sixth grade, she noticed that many of her classmates carried paper lunch bags. To help kid cut down on waste, she invented an eco-friendly lunch bag. It is partly made from recycled plastic bottles. "Kids like it because they can fold it up and put it in their backpacks," said Adrienne. She sells the bags at greenearbag.com. And some of the money goes to charity.

He's skiing to save the earth

【4】Parker Liantaud, 15, wanted to raise awareness about the effects of climate change on the polar regions. He set out to become one of the youngest people ever to ski the North Pole. Although the cruel conditions forced Parker and his guide to finish the last 15 miles of the journey by helicopter, Parker felt he met his goal to inspire others. "All young people have the power to make a change," he said.

He ______ the earth

【5】Every year, Max Kesselman, from Pennsylvania, USA, celebrates his birthday December 3 by cleaning up the Earth. When Max was 6, he noticed trash on the sides of the road. He wrote a letter to local leaders suggesting a cleanup day on his birthday.(words:353)

1.What is the main idea of the passage? （no more than 8 words）

2.What does the word "it" (Line 3, Paragraph3) probably refer to? （no more than 5 words ）

3.Fill in the blanks of the title of Paragraph 5 with proper words． （no more than 5 words）

4.Why didn't Parker ski the North Pole all the way?（No more than 7 words）

5.Write out  at least one other Green Activity you can take part in?（no more than 8 words）

我班就“有些学生在学校贴吧上发表对老师不满的言语”一事是否妥当进行讨论。下面是讨论的结果。请你以 “We should express opinions on our teachers in a right way” 为主题 写一篇报道介绍这次讨论的情况以及你的观点。　

注意：1.词数120左右；   

2.  参考词汇：贴吧 post bar,  卑鄙的mean(adj.) ,  难堪的embarrassed (adj.)      

背地里behind one’s back/privately

--- I’m sorry. I shouldn’t have blamed you for coming back later.

--- ________. I know you were worried about me.

A．Don’t mention it.                      B．That’s all right.

C．You’d better not.                      D．I can’t agree more.

There are over 58,000 rocky objects in ______ space, about 900 of which could fall down onto ______ earth.

A．the; the           B．/; the             C．the; a            D．a; /

The book has been translated into thirty languages since it ______ on the market in 1973.

A．had come         B．has come          C．came             D．comes

______ made things worse, Peter said, was that his parents stopped supporting him in developing the “flying car”.

A．It                B．Which            C．As               D．What

My mother opened the drawer to ______ the knives and spoons.

A．put away          B．put up            C．put on            D．put together

I’ve become good friends with several of the students in my school ______ I met in the English speech contest last year.

A．who             B．where            C．when             D．which