题目内容
Winter weather has returned to northern areas of the world. In much of the United States, winter means the return of snow.
Snow is a form of frozen water. It contains many groups of tiny ice particles (颗粒)called snow crystals(晶体). These crystals grow from water particles in cold clouds. They usually grow around a piece of dust. All snow crystals have six sides, but they grow in different shapes. The shape depends mainly on the temperature and water levels in the air. The shape of a snow crystal may change from one form to another as the crystal passes through levels of air with different temperatures. Snow contains much less water than rain. About seventy-five centimeters of snow has as much water as two and one-half centimeters of rain.
Generally, the color of snow and ice appears white. This is because the light we see from the sun is white. Most natural materials take in some sunlight. However, when light travels from air to snow, some light is sent back, or reflected(反射). Snow crystals have many surfaces to reflect sunlight. It is this light that gives snow its white color.
Much of the water we use comes from snow. Melting snow gives water to rivers and crops. Snowfall helps to protect plants and some wild animals from cold. Fresh snow is made largely of air which is kept among the snow crystals. Because the air has trouble moving, the movement of heat is greatly reduced. However, snow is responsible for the deaths of hundreds of people in the United States every year. Many people die in traffic accidents on roads that are covered with snow or ice.
66. In the center of a snow crystal there is ______.
A. air B. water C. dust D. sunlight
67. If fifteen centimeters of snow completely melts, the height of water will be ______.
A. 0.5 centimeter B. 1centimeter C. 1.5 centimeters D. 15 centimeters
68. According to the text, snow looks white because _______.
A. snow is actually white B. the ice particles are white
C. the reflection of light makes it look white D. there is a lot of air in the snow
69. How can snow protect plants from the cold?
A. Snow gives them much heat.
B. Snow turns into water and waters them.
C. Snow makes them keep moving.
D. Snow contains air which has trouble moving.
70. What is the last paragraph of the text mainly about?
A. Snow can give water to rivers and crops.
B. Snow can help crops keep warm in winter.
C. Snow has both advantages and disadvantages.
D. Snow is the cause of the deaths of many people.
CACDC
On a hill 600 feet above the surrounding land, we watch the lines of rain move across the scene, the moon rise over the hills, and the stars appear in the sky. The views invite a long look from a comfortable chair in front of the wooden house.
Every window in our wooden house has a view, and the forest and lakes seldom look the same as the hour before. Each look reminds us where we are.
There is space for our three boys to play outside, to shoot arrows, collect tree seeds, build earth houses and climb trees.
Our kids have learned the names of the trees, and with the names have come familiarity and appreciation. As they tell all who show even a passing interest, maple（枫树）makes the best fighting sticks and white pines are the best climbing trees.
The air is clean and fresh. The water from the well has a pleasant taste, and it is perhaps the healthiest water our kids will ever drink. Though they have one glass a day of juice and the rest is water, they never say anything against that.
The seasons change just outside the door. We watch the maples turn every shade of yellow and red in the fall and note the poplars’（杨树）putting out the first green leaves of spring. The rainbow smelt fills the local steam as the ice gradually disappears, and the wood frogs start to sing in pools after being frozen for the winter. A family of birds rules our skies and flies over the lake.
【小题1】What can be learned from Paragraph 2?
| A．The scenes are colorful and changeable. |
| B．There are many windows in the wooden house. |
| C．The views remind us that we are in a wooden house. |
| D．The lakes outside the windows are quite different in color. |
| A．the kids like playing in trees |
| B．the kids are very familiar with trees |
| C．the kids have learned much knowledge |
| D．the kids find trees useful learning tools |
| A．The change of seasons is easily felt. |
| B．The seasons make the scenes change. |
| C．The weather often changes in the forest. |
| D．The door is a good position to enjoy changing seasons. |
| A．To describe the beauty of the scene around the house. |
| B．To introduce her children’s happy life in the forest. |
| C．To show that living in the forest is healthful. |
| D．To share the joy of living in the nature. |
We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. The Sun is the major source of energy for our planet. It causes the evaporation (蒸发) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms(生物) on the Earth.
Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere,30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.
Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.
When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-coloured surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.
【小题1】According to the passage, the root( 根本的) cause for weather changes on the Earth is .
| A．the atmosphere surrounding the Earth |
| B．water from oceans and lakes |
| C．energy from the Sun |
| D．greenhouse gases in the sky |
| A．absorbed by the clouds in the lower atmosphere |
| B．reflected by the gases in the upper atmosphere |
| C．lost in the upper and lower atmosphere |
| D．used to evaporate water from the oceans and lakes |
| A．all living things on the Earth depend on the Sun for their food |
| B．a forest looks dark in winter because it absorbs solar energy |
| C．only 0.023% of the energy from the Sun is made use of on the Earth |
| D．greenhouse gases allow heat energy to escape from the Earth’s surface |
For thousands of years, man has enjoyed the taste of apples. Apples, which are about 85 percent water, grow almost everywhere in the world but the hottest and coldest areas. Among the leading countries in apple production are China, France and the United States.
There are various kinds of apples, but a very few make up the majority of those grown for sale. The three most common kinds grown in the United States are Delicious, Golden Delicious, and McIntosh..
Apples are different in color, size and taste. The color of the skin may be red, green or yellow. They have various sizes, with Delicious apples being among the largest. The taste may be sweet or tart(酸的). Generally, sweet apples are tasted fresh while tart apples are used to make applesauce(果酱).
Apple trees may grow as tall as twelve meters. They do best in areas that have very cold winters. Although no fruit is yielded during the winter, this cold period is good for the tree.
【小题1】It can be learned from the text that Delicious apples are_______.
| A．grown in France | B．sold everywhere | C．very big | D．quite sweet |
| A．the growth of apple trees |
| B．producing large apples |
| C．improving the taste of apples |
| D．the increase of water in apples |
| A．be small producers of apples |
| B．be large producers of applesauce |
| C．have the longest history in apple production |
| D．have the coldest winter among apple production |
| A．improved | B．increased | C．produced | D．sold |
I cheated on a unit test in math class this morning during second period with Mr. Burke. Afterward, I was too sick to eat lunch just thinking about it.
I came straight home from school, went to my room, and lay on the floor trying to decide whether it would be better to run away from home now or after supper. Mostly I wished I was dead. It wasn't even an accident that I cheated.
Yesterday Mr. Burke announced there'd be a unit test and anyone who didn't pass would have to come to school on Saturday, most particularly me, since I didn't pass the last unit test. I did plan to study just to prove to him that I'm plenty smart—which I am mostly—except in math.
Anyway, I got my desk ready to study on . Just when I was ready to work, Nicho came into my room with our new rabbit and it jumped on my desk and knocked the flashcards all over the floor. What a mess! Nicho and I finally took the rabbit outside but then Philip came to my room and also Marty from next door and before long it was dinner.
After dinner my father said I could watch a special on television if I'd done all my homework. Of course I said I had. That was the beginning. I felt terrible telling my father a lie about the homework.
It was nine o'clock when I got up to my room and that was too late to study for the unit test so I lay in my bed with the light off and decided what I would do the next day when I was in Mr. Burke's math class not knowing the 8- and 9-times tables. So, you see, the cheating was planned after all.
The next day, I'd go into class as usual, acting like things were going just great. I'd sit down next to Stanley Plummer—he is so smart in math it makes you sick—and from time to time, I'd glance over at his paper to copy the answers.
Lying on the floor of my room, I begin to think that probably I've been bad all along. It just took this math test to clinch it. I'll probably never tell the truth again. I tell my mother I'm sick when she calls me to come down for dinner. She doesn't believe me, but puts me to bed anyhow. I lie there in the early winter darkness wondering what terrible thing I'll be doing next when my father comes in and sits down on my bed.
"What's the matter?" he asks. "I've got a stomachache," I say. Luckily, it's too dark to see his face. "Is that all?" "Yeah." "Mommy says you've been in your room since school." "I was sick there too," I say. "She thinks something happened today and you're upset." That's the thing that really drives me crazy about my mother. She knows things sitting inside my head the same as if I was turned inside out.
"Well," my father says. I can tell he doesn't believe me. "My stomach is feeling sort of upset." I hedge. "Okay," he says and he pats my leg and gets up.
Just as he shuts the door to my room I call out to him in a voice I don't even recognize as my own. "How come?" he calls back not surprised or anything. So I tell him I cheated on this math test. To tell the truth, I'm pretty much surprised at myself. I didn't plan to tell him anything.
He doesn't say anything at first and that just about kills me. I'd be fine if he'd spank me or something. And then he says I'll have to call Mr. Burke. It's not what I had in mind. "Now?" I ask surprised. "Now," he says. He turns on the light and pulls off my covers. "I'm not going to," I say.
But I do it. I call Mr. Burke, and I tell him exactly what happened, even that I decided to cheat the night before the test. He says I'll come on Saturday to take another test, which is okay with me, and I thank him a whole lot for being understanding and all.
"Today I thought I was turning into a criminal," I tell my father when he turns out my light. Sometimes my father kisses me good night and sometimes he doesn't. I never know. But tonight he does.
【小题1】After the author cheated on the math test, he felt ____________.
| A．frightened because he might be caught |
| B．excited that he had succeeded |
| C．pleased that nobody knew it |
| D．unhappy because he had done something wrong |
| A．he had planned not to study before the test |
| B．he decided to cheat when he knew there was going to be a test |
| C．he decided to cheat after he had wasted the whole evening |
| D．he had planned to cheat with Plummer before the test |
| A．She really knows what he is thinking |
| B．she was very strict with him |
| C．she doesn’t believe him |
| D．she asks him to come down for dinner |
| A．scolded the author severely |
| B．didn’t say anything and left |
| C．called Mr. Burke immediately |
| D．let the author make a call to Mr. Burke |
| A．he had done something unusual |
| B．he promised to study math harder |
| C．he was willing to take a make-up test |
| D．he realized his mistake and had the courage to admit it |