—Thank you for the flowers.

—         . I thought they might cheer you up.

A．That’s right

B．All right

C． It’s all right

D．I’ m all right

三日疟原虫

A．侵犯各期红细胞
B．仅侵犯年幼的红细胞
C．仅侵犯衰老的红细胞
D．吞噬各期红细胞
E．吞噬衰老红细胞