In paragraph 3 the writer uses the phrase "to the best of my knowledge..." because ______.

In the last paragraph, the writer states that some companies are reluctant to export becau

The writer cites the Duomo in the last paragraph as an example to illustrate thatA．there i

The writer implies in the first paragraph thatA．Louise Johannes was known before the 1940s

In the first paragraph the writer emphasizes the __________ of face-to-face contact in soc

In the last paragraph the writer thinks that_____

In the third paragraph the writer indicates how h