四、根据汉语提示完成句子。
1. 我在这儿短暂停留看望祖父母。
I'm here see my grandparents.
2. 这个小男孩在十岁时建立了他的第一个网站。
The little boy website at the age of ten.
3. 他们都了解保护黄河的重要性。
They all know the Yellow River.
4. 我们能做些什么来帮助保护我们社区的清洁水源？
the clean water sources in our community?
5. 吃太多糖会导致牙齿问题。(lead to)

1. for a short stay to 2. set up his first 3. the importance of protecting 4. What can we do to help protect
5. Eating too much sugar can lead to dental problems.

五、（跨地理·环境与生活）完形填空。
The Arctic is home to over 21,000 kinds of animals and plants. Two thirds of it is the Arctic Ocean. In winter, it is completely covered with 1. In summer, nearly 50 percent of the sea is ice.
It's also home to about 4 million 2, a group of whom are Inuit(因纽特人). Jim is an Inuit boy. At 6:30 a. m., he wakes up and 3 go to school in his fur coat. It keeps him 4 in the freezing weather. Half an hour 5, he gets to school on a ski or snowmobile. At 11:30 a. m., it's time for 6. There's fish and other meat in his lunchbox. These foods give him enough 7. Besides local food, some people eat Western food. At 5:00 p. m., the snow outside makes everything bright, so he wears snow goggles(护目镜) on his way back home, or his 8 may be hurt badly by the strong light. At 10:00 p. m., he goes to bed. Sometimes he stays in an ice house called the igloo(冰屋). It looks cold but it's warm inside. Many local people live in houses 9 wood.
The Inuit mainly make a living by hunting and fishing. Now, their life is greatly influenced by climate change. For example, many animals they hunt for food are disappearing. There is 10 food for the reindeer(驯鹿) they keep, too. So, we have to take action to protect the environment.
1. A. green grass B. sea ice C. pretty flowers D. dirty sand
2. A. babies B. birds C. students D. people
3. A. pays attention to B. looks forward to C. gets ready to D. gets close to
4. A. hot B. warm C. cool D. cold
5. A. later B. after C. before D. ago
6. A. dinner B. breakfast C. lunch D. supper
7. A. enemies B. erasers C. energy D. exercise
8. A. ears B. mouth C. hands D. eyes
9. A. made of B. made up C. made by D. made from
10. A. more B. fewer C. less D. many

1~5. BDCBA 6~10. CCDAC