The house was very quiet,______as it was on the side of a mountain.

单项选择题The American basketball team announced that they would not（）first place to any team.

A. yoke
B. yell
C. yield
D. yearn

单项选择题What is the primary purpose of this passage（）

A. To alert people to the dangers posed by the Sun.
B. To discuss conditions on Earth in the far future.
C. To present a theory about red giant stars.
D. To describe changes that the Sun will go through.