What does the phrase "lichen colonies （line 19) suggest？A．Nothing but lichens live in some

What does the underlined phrase “die hard” in Paragraph I probably mean？（） A

What does the phrase" to bust the trusts" mean here？A．To break business monopolies.B．To ar

What does the professor imply about the spacecraft Clementine？A．It sent back the first col

What does the phrase "blanket debt forgiveness" in Paragraph 3 probably mean？A．Debt elimin

What does the phrase "taken with a barrel of salt" mean in the second paragraph？A．Rampant.

What does the phrase “the wake－up call” in Paragraph 3 most probably mean？A. a new dis