| Steven works in a farm tool factory. He and five of his friends are very interested (Example: {{U}} (0) {{/U}}) singing. So they have {{U}} (41) {{/U}} a singing group which is called Happy Birds. They sing {{U}} (42) {{/U}} songs both in Chinese and in foreign languages. They sing very {{U}} (43) {{/U}}. The ot her workers and people {{U}} (44) {{/U}} the villages around really like to h ear them {{U}} (45) {{/U}}. Now New Year’s Day {{U}} (46) {{/U}} here soon. The Happy Birds have been asked to {{U}} (47) {{/U}} at different places. They’d {{U}} (48) {{/U}} to go to all of them. {{U}} (49) {{/U}} one friend has too much work and {{U}} (50) {{/U}} may have to give up his holidays. The Happy Birds can’t sing without him. |
| If you are travelling in a train, the
things (Example: {{U}} (0) {{/U}}) seem to be {{U}} (41) {{/U}}
backwards. But this is not really true. It is the train that is
moving. It is like the case {{U}} (42) {{/U}} the earth and the sun. The sun seems {{U}} (43) {{/U}} in the east, move across the sky, and set in the {{U}} (44) {{/U}}. In other words, the sun seems to travel round the earth. However, {{U}} (45) {{/U}} not really true. It is the earth that is turning on {{U}} (46) {{/U}} own axis (轴) . The turning of the earth on its own axis is what makes the change {{U}} (47) {{/U}} day to night. The earth also travels round the sun on an unchanging path (路径). As well as the earth, {{U}} (48) {{/U}} other planets(行星) of {{U}} (49) {{/U}} sizes. These are known as the solar system. 我来回答: 提交
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