—Your English is very beautiful. —______

患者，男性，41岁，骑车与汽车相撞跌倒，右手撑地，随后腕部肿痛，活动障碍，检查后初步诊断为腕舟状骨骨折。医师主要依据体格检查中的哪一项初步确立诊断（）

A.桡侧腕部肿胀

B.腕关节桡侧偏受限

C.腕屈伸受限

D.纵向叩击第三掌骨头，腕部疼痛

E.鼻烟窝部有明显压痛

女性，29岁，贫血病史一年，浅表淋巴结不肿大，肝脾未触及，血象呈现全血细胞减少，若诊断再障，哪项意义最大

A．网织红细胞减少

B．骨髓增生低下，造血细胞减少

C．骨髓非造血细胞增多，NAP增加

D．铁粒幼细胞消失

E．巨核细胞增多

—How much are_____?    

—They are 15 dollars.     [ ]

A. this pant    

B. that pant    

C. these pants    

D. this pair of pants

Which of the following statements about exchange-traded funds (ETFs) and closed-end funds is FALSE （）

A. ETFs can only trade in the secondary market, while closed-end funds can be redeemed in cash by the manager of the underlying index.

B. Because of arbitrage, shares of an ETF rarely trade at a premium or discount to NAV as shares of a closed-end fund often do.

C. Market specialists can create new shares of an ETF by depositing the underlying stocks, a strategy that cannot be used with closed-end funds.

搭叠量的含义是什么？