单项选择题

A．Because it happens very fast.
B．Because it gives eyes a break.
C．Because it moistens eyes.
D．Because it relaxes eyes.
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单项选择题
A．His body’’s resistance was low and he went to big department store.B．He was overtired and didn’’t eat nutritious food.C．He was stressed out because he had to decide which gift to buy.D．He had to run around all day.
A．His body’’s resistance was low and he went to big department store.
B．He was overtired and didn’’t eat nutritious food.
C．He was stressed out because he had to decide which gift to buy.
D．He had to run around all day.
单项选择题
A．In Canada.B．In their homeland.C．Not in Canada.D．In the U. S.
A．In Canada.
B．In their homeland.
C．Not in Canada.
D．In the U. S.
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