LR019 Cowpox (BS)
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Do you know cowpox? Cowpox is a disease that can make cows and sometimes humans sick. It causes small bumps on the skin. A long time ago, a clever man named Edward Jenner saw that milkmaids who got cowpox did not get smallpox, a very dangerous disease. In 1796, he took some cowpox from a sick cow and injected it into a young boy's arm. The boy got a little sick, but got better. Later, Jenner gave the boy smallpox, but he did not get sick. This was the beginning of vaccines, which are now used to protect us from many diseases.
memo
使ってほしい文法
関係代名詞
Cowpox is a disease
Cowpox can make cows sick. の２つをつなぐと？
This was the beginning of vaccines.
Vaccines are used to protect us from many diseases. の２つをつなぐと？
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