The word "microbes" in paragraph 3 could be best be replaced by which of the following?

The purpose of the passage is to ______

The word “elements” is most similar to ______

It can be inferred from the passage that the ice would not be flat if ______

If you are in a foreign country, the best way the writer suggests to you is to wear .

Negative publicity" in the passage most likely means .

If you visit an American friend at home in the evening, you may find that your friend wears

The word "means" in the passage most closely means

The paragraph following the passage most probably discusses

The word “elegant” is closest in meaning to _______.

The changes possibly caused by the cell phones are mainly concerned with

Ten thousand years ago _____.

What is the main topic of the passage?

The underlined word “sophisticated” in paragraph 1 can be best replaced by______.

The man mentioned in the passage, who used his cell phone too often,

The word "vulnerable" in paragraph 4 is closest in meaning to _____.