You can speak to people on other side of the earth over the【M1】______ telephone with the help of a satellite. They can help to t

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问题     You can speak to people on other side of the earth over the【M1】______
telephone with the help of a satellite. They can help to take【M2】______
photos on the earth and produce maps. Some pictures【M3】______
taking by satellites show us the exact place where different metals【M4】______
can be found. They can also tell the differences between healthy plants or【M5】______
poor ones. This is a great help to the scientists work in forestry and in【M6】______
agriculture. Satellites benefit by our daily life. For example, satellites for【M7】______
broadcasting are used to sending radio and TV programmes【M8】______
from one part of the world to other. It is the satellites【M9】______
to make our world seem smaller.【M10】______
【M3】

选项

答案on—of

解析 根据上下文,该处应为拍摄地球的照片,而不是在地球上拍照片。
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