问题
填空题
15个图钉大约重10克，想一想30个图钉大约重（ ）克。
答案
20
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15个图钉大约重10克，想一想30个图钉大约重（ ）克。
20
| 周末，我和朋友们除了进行一些娱乐活动外，还参观了博物馆，看到了许多发明…… | |
（A）按要求将所给的单词、词组分类。（请写字母）
2. The inventions that we saw were __________________. 3. We thought the inventions were ____________________. （B）回答问题。 4. What would you like to invent if you can and why? I would like _____________ because __________. |