单项选择题

Just as any other vaccine, LYMErix may also have some side effects such as（）

A．backache
B．fever and coughing
C．stomachache
D．serious headache

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单项选择题
According to the second paragraph, the LYMErix is（）

A．suitable for people at any age
B．lined with no side effects
C．used to protect all people
D．a safe and effective way to prevent Lyme disease
单项选择题
This passage is probably taken from（）

A．a business letter
B．an introduction
C．an instruction
D．an advertisement
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