单项选择题

A．How birds learn to build nests.
B．Why birds lay eggs.
C．How bird’s nests have evolved.
D．Why some bird’s nests are considered primitive.
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单项选择题
A．The woman’s doctor.B．The woman’s husband.C．A shoe buyer.D．A shoe salesman.
A．The woman’s doctor.
B．The woman’s husband.
C．A shoe buyer.
D．A shoe salesman.
单项选择题
A．He went mountain climbing last year.B．He hasn’t traveled around the world yet.C．He’d like to climb that mountain.D．He definitely does not want to go.
A．He went mountain climbing last year.
B．He hasn’t traveled around the world yet.
C．He’d like to climb that mountain.
D．He definitely does not want to go.
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