患者男，72岁，因“周期性意识模糊3年”来诊。3年前突发意识模糊及定向力障碍，短时间

设N_A为阿伏加德罗常数，下列叙述正确的是（   ）

①⁷Li⁺中含有的中子数与电子数之比为2：1

②Cl₂的摩尔质量与N_A个Cl₂分子的质量在数值和单位上都相等

③常温下，11.2L的甲烷气体中含有的氢、碳原子数之比为4：1

④活泼金属从盐酸中置换出1molH₂，转移电子数为N_A

⑤在C₂H₆分子中极性共价键与非极性共价键数之比为3：1

⑥500mL0.5mol·L^-1Al₂(SO₄)₃溶液中，含SO₄^2-数目为0.75N_A

⑦5.6g铁与足量的氯气反应失去的电子与参与反应的铁的物质的量之比为2：1

⑧常温常压下，0.5 N_A个一氧化碳分子所占体积是11.2L

A．①②⑤

B．②③⑧

C．①③⑥

D．③④⑦

从内容来看，同一个行政组织的目标在不同时期是不同的，这充分体现了行政组织目标具有( )

A．复杂性

B．动态性

C．和谐性

D．服务性

患者女性，32岁。头昏、乏力、贫血，不能坚持工作。7年前开始感乏力、头昏、食欲减退，久蹲直立时眼前发黑，就医发现贫血。口服铁剂，因胃部不适，未能坚持。改用利血升，叶酸。利勃隆及中草药，并注射VitB₁₂，病情时好时坏。半年来症状加重，心悸，气急，吞咽时肠内烧灼感，不能坚持工作。婚后三年，未妊娠。发育良好，面色黄白，皮肤黏膜无出血，肝脾未触及。实验室检查：Hb 65g/L，RBC 2.85×10¹²/L，WBC 5.2×10⁹/L，网织RBC0.01，尿常规(-)，大便潜血(-)，HCT 0.22，MCV 77.4fl，MCHC 29.4pg，SR26mm，血浆蛋白3.8%，球蛋白2.4g%，血清铁4.4μmol/L，血清总铁结合力88.4μmol/L，骨髓细胞外铁消失。

该患者骨髓检查描述错误的是

A．骨髓增生活跃

B．骨髓增生明显活跃

C．骨髓增生以红细胞系统增生为主

D．粒红比值增高

E．红细胞系统增生以晚幼红细胞为主

· AC Milan star Kaka says a foot injury is still stopping him from returning to football. He has not played for 32 days. Kaka says he is in a lot of pain. "I hurt myself in an area that we always put pressure on." Kaka once played for a year with a knee injury, but the 26-year-old said this is much worse.
· British actress Emma used to spend more time filming than at school. But today she is ready to pay more attention to her studies. This 19-year-old girl will start at the Yale University in the autumn. "I always loved school. I just want to go back and find what else there is," she said.
· Chinese 25-year-old sports star Liu Xiang returned to Shanghai in March. He had a successful foot operation in December in Houston, and spent the next three months there for recovery and basic training. It is said that a group of doctors are ready to help with Liu’s recovery.
· Russian great tennis player Sharapova will not he playing in the MPS Group Championships, which begins in the US on Monday. Sharapova was missing the Sony Ericsson Open the week before last in Miami. She may continue training for the WTA Rome event at the beginning of May.

Liu Xiang’s foot operation was successfully done in December in ______.

A．Miami

B．Rome

C．Houston

D．Shanghai

以下哪种不是肠杆菌科细菌的性状

A．发酵葡萄糖

B．还原硝酸盐

C．氧化酶阳性

D．需氧或兼性厌氧

E．触酶阳性