高一英語外研版必修3課堂15分鐘達標練：module4period1版含解析(已修改)
2024-12-21 01:59 本頁面
【正文】 溫馨提示： 此套題為 Word 版，請按住 Ctrl,滑動鼠標滾軸，調(diào)節(jié)合適的觀看比例，答案解析附后。關(guān)閉 Word 文檔返回原板塊。 課堂 15 分鐘達標練 A sandstorm, also known as a dust storm, is exactly what it sounds like. A very strong windstorm especially in the desert carries clouds of sand or dust that greatly reduces visibility. This wind is usually caused by convection currents(對流氣流 ), which are created by intense heating of the ground, and is usually strong enough to move entire sand dunes. Air is unstable when heated, and this instability in the air will cause higher winds to mix with winds in the lower atmosphere, producing strong surface winds. Sandstorms can disturb people’s travel, and can sometimes destroy whole roads, and dry flat areas. Similar dust storms can be found on the pla Mars, and are
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