单项选择题

To do the experiment, altogether how many cards do you need to prepare（）

A．Two, one blue and one red.
B．Three, two blue and one red.
C．Three, one blue and two red.
D．Four, two blue and two red.

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热门试题

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

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