单项选择题

This passage in general is about ()

A．Halley and other scientists
B．the orbit of a comet
C．Newton and Halley
D．Halley and his discovery

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单项选择题

According to the passage, which one is NOT true()

A．Newton figured out the orbit of the comet.
B．Halley figured out the orbit of the comet first.
C．Newton gave Halley some help.
D．Halley died before 1758.

单项选择题

The one who first suggested the correct cause of the baby's illness was()

A．a doctor in Deleville
B．a famous doctor
C．Agatha Christie
D．an ordinary nurse