单项选择题

We can infer from the passage that there were some women scientists ______.

A．on board Sky Lab before 1962
B．on board Sky Lab before 1965
C．on board Sky Lab after 1962
D．on board Sky Lab after 1965
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单项选择题
What is the best title for this passage
A．Interested in Space Travel
B．One of America's First Women Astronauts
C．How to Become a Woman Astronaut
D．Who is the First American Woman Astronaut
单项选择题
According to the passage, ______ are lost in strike.
A．about 50 million working days
B．more than 200 million working days
C．almost 20 million working days
D．at least 12.5 million working days
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