电子数相等的微粒叫做等电子体，下列各组微粒属于等电子体是 A．CO和CO2 B．

Passage Two

Which of the following is NOT tree of Andrea Doria

A．The ship was luxuriously decorated.

B．The ship was carrying several million dollars.

C．The ship had some precious sculptures on board.

D．The ship has attracted a lot of treasure hunters ever since its sinking.

That's a girl. Her name is____________.

A. Wang Xiaohong  B. Wang Xiao Hong  C. Wang xiaohong

「クラブ」的意思是（）。

A、俱乐部

B、毛巾

C、围巾

D、商店

葡萄胎刮宫术后，黄素囊肿消退常需要多长时间（）

A.1～2周

B.4～5周

C.6个月

D.2～4个月

E.8周

营养性缺铁性贫血的患儿最主要的特点是

A．小细胞低色素性贫血

B．正细胞低色素性贫血

C．大细胞低色素性贫血

D．大细胞高色素性贫血

E．小细胞高色素性贫血