难以鉴别的肾癌和肾囊肿，最可靠的检查方法是（） A.静脉尿路造影 B.逆行肾盂造影

男性，68岁，乏力、腹胀消瘦8个月，查体：脾大平脐，全血细胞减少，骨穿多次干抽

为明确诊断最需要做的检查是（）

A.腹部B超

B.骨髓活检

C.染色体检查

D.脾穿刺活检

E.NAP积分

— Peter! How are you getting on with your studies?

— Well, my grades have gone down, not too much, but _____ to make my mom disappointed. [ ]

A. rather

B. well

C. badly

D. enough

—The classroom is 　　　clean 　　　it was yesterday.

—Sorry, I forgot to clean it.

A．as, as

B．so, as

C．not as, as

D．more, than

选矿中给矿物料的最大粒度指物料（）通过某一筛孔尺寸。

A．95%

B．85%

C．75%

春季卡他性结膜炎的细胞学检查有哪些改变（）

A.单核细胞增多

B.多形核白细胞增多

C.嗜酸性粒细胞增多

D.细胞质内有包涵体

E.中性粒细胞增多