Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange animals coming out of the oceans, but in fact no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessity, since they, the plants, are the only form of life that is able to get and store energy.

　　The first plants to exist out of the water were probably certain kinds of algae（海藻）which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution（进化）took place quickly. By the end of 100 million years, plants had developed their roots（根）,and some had got tree-like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.

The main idea of the first paragraph is ________.

　　A. life on land probably began 430 years ago

　　B. the first animal on land came from oceans

　　C. there wouldn't be animals without plants

　　D. plants are the only form of life that is able to get and store energy

Which of the following statements is true according to the passage?

　　A. Algae has existed for more than 430 million years.

　　B. It is impossible that algae might be the earliest plant on land.

　　C. Plants get food from animals in the oceans.

　　D. Evolution began after animals appeared on land.

Plants with roots appeared about ________ million years ago.

　　A. 430　　　　　B. 300　　　　　 C. 330　　　　　 D. 100

According to the passage, ________ appeared earlier than ________.

　　A. apples; oranges　　　　　　　　 B. oranges; apples

C. oranges; roses　　　　　　　　　D. algae; wheat

A spirit of adventure, curiosity about different cultures and the desire for a challenge can be found in young people everywhere. More and more students in China are backpacking around the country.
According to the China Youth Travel Service, Hainan, Dalian, Zhangjiajie and Qingdao were among the most popular spots for young Chinese backpackers last year. Backpacking allows the traveler a greater sense of independence.
“I can no longer put up with the instructions of a tourist guide,” said Huang Ye, a 19-year-old college student in Beijing. “They are always driving you to places that you do not want to go to and trying to make you buy local souvenirs（纪念品）.”
Huang likes to travel as a backpacker. She prefers an independent trip that she took with two friends to Jiuzhaigou in Sichuan Province. There, they chose some scenic spots to visit and avoided the masses of tourists.
Backpackers see the difficulties of such travel as a challenge. Living on bread and water for days on end, wearing the same clothes over and over again and carrying a heavy bag on their backs while climbing a mountain are all character-building experiences.
But perhaps the greatest challenge that a backpacker faces is not a physical one, but mental. They may face loneliness if they travel alone.
Chen Xuewei, 21, suffered when he took off around China last year. “I felt very lonely at the beginning of my journey. A walkman didn’t make me feel better, but rather heightened the sense of loneliness I felt. I even called up my friends to tell them that I wanted to give up and go back to Beijing,” he recalled. But he kept going. He started to make friends and appreciate the local customs. He took lots of photos to record his trip and now he is glad he stuck it out.
Backpackers generally find themselves to be mature（成熟）after their experiences. “Their travel logs（旅行日志）track their development as people.” “When I feel frustrated, I read my travel log again,” said Tang Weifeng, a postgraduate at Peking University. “By reading it, I get a sense that I am better off now than I was when I wrote those words by the light of a torch in a hot tent.”
63. Which of the following is NOT mentioned as one of the advantages of backpacking according to the story?
A. It builds up your character.
B. Through the experience, you learn to live in a tent.
C. Through the experience, you learn to rely on yourself.
D. Through the experience, you learn to deal with loneliness.
64. What does the underlined word “frustrated” in the last paragraph mean?
A. Disappointed.       B. Happy.       C. Tired.       D. Excited.
65. What is the story mainly about?
A. Some backpackers’ experiences.  
B. The advantages of backpacking.
C. Young people’s love of backpacking.
D. The increasing popularity of backpacking among Chinese students and its reasons.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

The sea has always interested man. From it he can get food, minerals and treasure. 1. But he couldn’t go far beneath its surface.

??? 2. However, he isn’t a fish. Because he must breathe air, he can’t stay under the water’s surface for any length of time. To explore deep water, man faces even more dangers and problems.

??? A diver who wants to stay under water for more than a few minutes must breathe air or a special mixture of gases. 3. He can carry a tank of air on his back and breathe through a hose and a mouthpiece. Water weighs 800 times as much as air. Tons of water pushes against a diver deep in the sea. 4. .

??? When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rises to the surface, the water pressure becomes less. If the diver rises too quickly, the gases in his blood form bubbles. The diver is then suffering from the bends（潜水员病）. The bends can cause a diver to double up in pain. 5. ?

A. His body is under great pressure.

B. Scientists are trying to find more about the sea.

C. For thousands years, he could sail on it

D. They can even kill him．

E. He can wear a diving suit and have air pumped to him from above.

F. The water pressure can cause a diver to breathe with difficulty.

G. Man wants to explore deep into the sea.

As people slowly learn to cure diseases, control floods, prevent hunger, and stop wars, fewer people die every year. As a result, the population of the world is becoming larger. In 1925 there were about 2 billion people in the world; today there are over 6 billion.
When the number rises, extra mouths must be fed. New lands must be brought under development, or land already farmed must be made to produce more crops. In some areas the land is so over-developed that it will be difficult to make it provide more crops. In some areas the population is so large that the land is divided into too tiny units to make improvement possible with farming methods. If a large part of this farming population went into industrial work, the land might be farmed much more productively (多产地) with modern methods.
There is now a race for science, technology, and industry to keep the output of food rising faster than the number of people to be fed. New types of crops, which will grow well in bad weather, are being developed, so there are now farms beyond the Arctic Circle in Siberia and North America. Irrigation (灌溉) and dry-farming methods bring poor lands under the plough. Dams hold back the waters of great rivers, which can provide water for the fields in all seasons and provide electric power for new industries. Industrial chemistry provides fertilizer to suit different soils. Every year, some new methods are made to increase or to protect the food of the world.
【小题1】The author says that the world population is increasing because _____.

If you go to Juliano’s restaurant in San Francisco, you can’t get a cup of coffee or a hot cheese sandwich. All the food in the restaurant is raw, including the pizza and the rice.
Juliano thinks that cooked food makes us sick. “Food is alive, like you and me. When you cook food, you take away some of the vitamins,” he says. Juliano never eats food that is over 50 degrees. His restaurant doesn’t have a stove（火炉）or a microwave（微波炉）. But he has lots of clever ideas for making raw food taste great. Instead of heat, Juliano uses water to prepare food. He puts foods in water to make them soft. For example, he places beans in water for a few days and rice in water for two to four weeks.
Everything at the restaurant is cold, and the pizza and the rice taste good. So do the fruit and vegetable juices made from carrots, apples, oranges and so on. Juliano’s restaurant doesn’t serve meat, but some people who eat raw food also eat raw meat. Juliano has three friends who ate raw meat. They all got very sick. One of them is still sick.
Juliano eats mostly fruits, vegetables, nuts, rice and beans. He says he feels very healthy. “Raw food gives you lots of energy,” he says. Juliano says he needs only six hours of sleep a night, and he never gets sick.
【小题1】.
How is the food in Juliano’s restaurant prepared?