Unit7知识点 F部分练习 2025-2026学年沪外教版七年级英语上册

七年级英语上册Unit7知识点-F部分练习 小试牛刀 A. 选用方框中的短语填空（每个限用一次） | filled with soil | stick the thermometers | record the temperatures | place the jar | compare the temperatures | 1. Prepare two cups ____________________ and mark them A and B. 2. ____________________ in cup A and cup B. 3. Put the cups in sunlight for 10 minutes and ____________________. 4. Then, ____________________ upside down over cup A. 5. Finally, ____________________ in cup A and cup B. B. 句型转换（改为一般疑问句并作肯定或否定回答） 1. The glass jar traps heat from the sun. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 2. Cup A is two degrees higher than cup B. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 3. You should record the temperatures carefully. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 配套练习 A. 单项选择（★） 从A、B、C、D中选择最佳答案。 1. What is the purpose of this experiment? A. To grow plants. B. To model the greenhouse effect. C. To measure soil temperature. D. To make a glass jar. 2. How many cups are used in the experiment? A. One. B. Two. C. Three. D. Four. 3. What do you put over cup A in step 4? A. A lid. B. A plastic film. C. A glass jar upside down. D. A bottle of water. 4. In the findings, A2 is ______ than B2. A. the same B. one degree lower C. two degrees higher D. three degrees higher 5. What does the glass jar represent in the greenhouse effect model? A. The sun. B. The Earth’s atmosphere. C. The soil. D. The thermometer. B. 完成句子（★★） 根据实验内容，用正确的词汇完成句子。 1. 我们需要两个装有土壤的杯子。 We need two cups ______ ______ soil. 2. 把温度计插在杯子A和杯子B中。 ______ the ______ in cup A and cup B. 3. 将两个杯子放在阳光下10分钟。 ______ the two cups in the ______ for 10 minutes. 4. 将玻璃罐倒扣在杯子A上。 ______ the glass jar ______ ______ over cup A. 5. 比较杯子A和杯子B的温度。 ______ the temperatures in cup A ______ cup B. 拓展思考 写一段话（至少5句）描述这个温室效应实验的步骤和结果。使用顺序词 First, Next, Then, Finally。说明杯子A和杯子B的温度有什么不同，以及这个实验告诉我们什么道理。 _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ 参考答案与解析 小试牛刀 A 1. filled with soil 2. Stick the thermometers 3. record the temperatures 4. place the jar 5. compare the temperatures 小试牛刀 B 1. Does the glass jar trap heat from the sun? Yes, it does. / No, it doesn’t. 2. Is cup A two degrees higher than cup B? Yes, it is. / No, it isn’t. 3. Should you record the temperatures carefully? Yes, you should. / No, you shouldn’t. 配套练习 A 1. B（模拟温室效应） 2. B（两个杯子） 3. C（玻璃罐倒扣） 4. C（两度更高） 5. B（地球大气层） 配套练习 B 1. filled with 2. Stick, thermometers 3. Put, sunlight 4. Place, upside down 5. Compare, and 拓展思考（示例） First, prepare two cups filled with soil and mark them A and B. Next, stick a thermometer in each cup. Then, put both cups in sunlight for 10 minutes and record the temperatures. After that, place a glass jar upside down over cup A for 10 minutes. Finally, compare the temperatures. Cup A is two degrees higher than cup B. This shows that the glass jar traps heat just like greenhouse gases in the atmosphere. Global warming works in a similar way. We should reduce greenhouse gases to keep our planet cool. 1 学科网（北京）股份有限公司 $