The purpose of the writer is______.
A. to reduce modern technology
B. to improve man's way of life
C. to warn people not to change the natural environment
D. to call attention to the protection of the natural environment
The word "groundbreaking" (Para. 7) can be interpreted as______.
A. pioneering
B. essentially new
C. epoch-making
D. evolutionary
Yang Liwei didn't send any message back lo Earth.
A. Right.
B. Wrong.
C. Doesn't say.
【B1】
A. met
B. watched
C. see
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