单项选择题

During step 2 of the experiment, the bees come to（）

A．the original (原来的) blue card with syrup on it
B．the new blue card with no syrup on it
C．the empty space where the original blue card was
D．the new blue card with syrup on it

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单项选择题

Which number would you call if your friends were suddenly ill（）

A．(212)344～0996
B．(212)363～7620
C．(212)363～3260
D．(212)269～5755

单项选择题

According to the article, you think the bees（）

A．cannot see colors
B．sometimes can see colors
C．seeing colors or not it was not understood by people
D．can see colors