pH影响微生物生长的机制是（）、（）、（）。

患者近来尿少，大便反复带有鲜血。查体：面部有蜘蛛痣，左肋缘下触及脾脏，腹部叩诊出现移动性浊音。应首先考虑的是

A．肾病综合征

B．右心功能不全

C．肝硬化

D．慢性肾功能不全

E．乙型肝炎

How were Frank and I connected()

A.My grandmother and his grandmother were sisters.

B.We were first cousins once removed.

C.We were second cousins once removed.

D.My great-grandmother and his great-grandmother were sisters.

有一个分枝的花鹿茸习称（）

A．二茬茸

B．二杠

C．莲花

D．单门

E．门庄

对虾幼体弧菌病通常在溞状幼体Ⅱ期后发病率最高。

美国著名科学教育家Bybee认为科学素养教育要经历4个环节，即所谓（）

A.教材

B.目的

C.方针

D.实际