高一年级秋季学期期中试卷

　　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 the 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.

　　28. In the center of a snow crystal there is .

　　A. air B.dust C. water D. sunlight

　　29. If fifteen centimeters of snow completely melts, the height of water will be .

　　A. 0.5 centimeter B. 1 centimeter C. 1.5 centimeters D. 15centimeters

　　30. According to the text, snow looks white because .

　　A. snow is actually white B. the ice particles are white

　　C. here is a lot of air in the snow D. the reflection of light makes it look white

　　31.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.

　　D

　　The world’s native languages are dying out at an unprecedented(空前的) rate, taking with them irreplaceable(不能替代的) knowledge about the natural world, according to a new study.

　　The study identified five global “hot spots” where languages are vanishing faster than anywhere else ---- eastern Siberia, northern Australia, central South America, the US state of Oklahoma and the US Pacific Northwest. “Languages are suffering a global extinction crisis that greatly goes beyond the pace of species extinction,” linguistics(语言学的) professor David Harrison noted, who said half of the world’s 7,000 languages were expected to disappear before the end of the century.

　　Native people had an intimate(详尽的) knowledge of their environment that was lost when their language disappeared, along with other certain things often unfamiliar to us, Harrison stressed. “Most of what we know about species and ecosystems is not written down anywhere, it’s only in people’s heads,” he said. “We are seeing in front of our eyes the loss of the human knowledge base.”

　　Harrison was one of a team of linguists who carried out the study. The researchers traveled to Australia this year to study native languages, some of the most endangered. According to Harrison, in Australia, they were heartened to see a woman in her 80s who was one of the only three remaining speakers of the Yawuru language passing on her knowledge to schoolchildren. He said such inter-generational exchanges were the only way native languages could survive. “The children had elected to take this course, no one forced them,” he said. “When we asked them why they were learning it, they said,‘This is a dying language, we need to learn it’.” Also, while there they found a man with knowledge of the Amurdag language, which had previously been thought extinct.

　　The researchers said all five of the hot spots identified were areas that had been successfully colonized and where a dominant language such as Spanish or English was threatening native tongues.

　　32.What does this text mainly talk about?

　　A.The knowledge of native languages.

　　B.A study on native languages endangered.

　　C.People’s efforts in saving native languages.

　　D.Harrison and his study on languages.

　　33.The underlined word“vanishing”in the second paragraph can be best replaced by .

　　A.developing B.changing C.increasing D.disappearing

　　34.According to Harrison, language extinction .

　　A.results in lots of worries

　　B.speeds up the pace of species extinction

　　C.threatens the existing of Spanish and English

　　D.brings about a loss of knowledge about the environment

　　35.According to the text, native languages were endangered partly because of .

　　A.few researches done on them B.the small population of native people

　　C.the strong influence of ruling languages D.little education native people receive at school

　　三、七选五(共5小题，每小题2分，满分10分)

　　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。

　　Five tips for safe running

　　We all know that exercise is good for our health. But some kinds of exercise may be better than others. Running ,for example, may help to protect against heart disease and other health problems.

　　Running is good exercise, but it can be hard on the body. 36

　　Take it easy. Do not run too much,too soon or too fast. Most people get running injuries when they push themselves too bad. The body needs time to get used to increase in distance or speed. 37

　　Listen to your body. Most running injuries do not come unexpectedly. 38

　　They may include body aches, sore muscles and pain that does not go away.

　　39 There is no single best shoe for every runner. You should find the shoe that offers the best fit and support for your feet. More importantly, you should replace your shoes every 500 to 800 kilometers.

　　Take good notes. Take time after each run to write down what you did and how you felt. Look for patterns, things that happen over again. These notes will help you find the best exercise for you.

　　Cross train. As we said earlier, running is hard on your body. So physical fitness experts suggest some form of cross training to improve muscle balance and to help you stay injury free. They say swimming, yoga, and riding a bicycle are good exercises to combine with running. 40

　　A. Get good running shoes.

　　B. Usually, there are warning signs.

　　C. Running may also help you live longer

　　D. These exercises are easier on the body.

　　E. Muscles and joints(关节) need time to recover.

　　F. As advertisements for the running shoe Nike say,”just do it.”

《高一年级秋季学期期中试卷》阅读地址：http://xiezuoyi.com/63273/