According to the passage, the exchange of medical ideas between east and west started ________.
A: thousands of years ago
B: decades of years ago
C: a few years ago
D: after the Second World War
A: thousands of years ago
B: decades of years ago
C: a few years ago
D: after the Second World War
举一反三
- When did the Internet get started? A: Fifteen years ago B: Fifty years ago C: Seventy years ago D: Eighty years ago
- A few years ago, .
- More than________ years ago, there was a war between these two cities.
- More than ______ years ago, there was a war between the two countries. A: three thousand B: three thousands C: three thousand of D: three thousands of
- Is this the museum ____ you visited a few years ago?