Which of the following tests are NOT used to examine the weak form of the efficient market hypothesis Those that examine:（）

A. whether security returns are independent over time.

B. a security’s return relative to the market return.

C. whether excess returns can be obtained from using mechanical trading rules.

某患者长期咳嗽，咳痰每日量约300ml，如咳痰不畅时则呈弛张型发热，此时血象的变化最可能是 （）

A.嗜酸性粒细胞增加

B.中性粒细胞增加

C.大单核细胞增加

D.淋巴细胞增加

E.红细胞减少