单项选择题

"AIDS has spread both numerically and geographically. " What does the statement mean What is the passage mainly about

A．How AIDS spreads to Africa.
B．How innocent people contract AIDS.
C．What can be done to save innocent victims of AIDS.
D．How HIV-positive persons develop AIDS.
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单项选择题
What CAN’T you conclude from the passage
A．Miss Jarvis was devoted to her mother.
B．Miss Jarvis knew many important persons.
C．Miss Jarvis was very persistent.
D．Miss Jarvis’s efforts were not in vain.
单项选择题
The second and third paragraphs are mainly about().

A．the decline of science’s power
B．the examples of separation between science and the humanities
C．the development of science
D．the author’s sympathy with scientists
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