单项选择题

What is the best title for this passage

A．Development of cancer research.
B．Childhood cancer and pollution.
C．Engine exhausts.
D．Pre-natal car
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单项选择题
How many new cases of childhood diagnosed in the UK each year
A．12.
B．300.
C．22,500.
D．1,500.
单项选择题
What kind of child is vulnerable to cancer
A．Those who live near a factory.
B．Those who live near a bus station.
C．Those who live in Birmingham.
D．Those who live in the UK.
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