Questions 6 to 10 are based on the following news.
 

10().

单项选择题Which of the following is NOT true about the expression Hubble Trouble ()

A. It was first coined by newspapers and magazines.
B. It was used to describe the waste of $1.5 billion of public money to make the Hubble.
C. It referred to the wrong shape of the space mirror with a mistake of 2.2 micrometers.
D. It showed the telescope’s blurred vision caused from wrong grinding.

单项选择题The author quoted from Richard Froyen’s macroeconomics textbook in the passage mainly to().

A. to introduce the American history of the Great Depression of the 1930s
B. to provide a sharp contrast to today’s profusion of numerous econornic data
C. to compare the policies of Presidents Hoover and Roosevelt in combating economic crisis
D. to discuss with examples the significance of studying the theory of rnacroeconomics