单项选择题

The head, chest, and abdomen of the tick are completely healed together.

A.正确
B.错误
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Ticks mainly consist of Ixodidae and Argasidae, of them the Argasidae has more species.
A.正确
B.错误
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The major consequences of pregnant women infected with Toxoplasma gondii is severe abnormalities or abortion of newborns.
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