作例4 89p テキストの一部を隠す（1）

作例⑤ p. 91
テキストの一部を隠す（2）
画像で隠す
Over 70 percent of the surface of the earth is covered with
water. That is why the earth is called the “water planet.” As you
can see on this chart, however, the water available for human
use is only about 0.03 percent of the total amount of the earth’s
water. More than seven billion people and all other animals and
plants must share this limited resource.
Over 70 percent of the surface of the earth is
covered with water. That is why the earth is called the
“water planet.” As you can see on this chart, however,
the water available for human use is only about 0.03
percent of the total amount of the earth’s water.
More than seven billion people and all other animals
and plants must share this limited resource.
Over 70 percent of the surface of the earth is
covered with water. That is why the earth is called the
“water planet.” As you can see on this chart, however,
the water available for human use is only about 0.03
percent of the total amount of the earth’s water.
More than seven billion people and all other animals
and plants must share this limited resource.

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