下列物质，既能与盐酸反应，也能够与NaOH溶液反应的一组是[ ]

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问题选择题

① SiO₂ ② NaHCO₃ ③ Al ④ Al₂O₃ ⑤ (NH₄)₂CO₃ ⑥ (NH₄)₂SO₄

A．①②③④

B．①③④⑤

C．②③④⑤

D．③④⑤⑥

答案

答案：C

多项选择题案例分析题

患儿男，1岁6个月，因“抽搐1次”来诊。发热、咳嗽5d，加重3d，嗜睡、呕吐1d，今晨抽搐1次，当时体温37.5℃。查体：T38.5℃；昏睡状，气促，口周发绀，鼻翼扇动，可疑颈强直；双肺中小水泡音，HR140次/min；双侧膝跳反射较亢进，双侧巴宾斯基征（＋）。

为明确诊断应紧急检查的项目包括（）

A.血常规

B.颅脑CT

C.颅脑MRI

D.脑脊液常规、生化

E.胸部X线片

F.胸部CT

G.痰细菌培养

H.脑电图

填空题

语法填空。

At 3:42 a.m. everything began to shake. It seemed l_____ the world was 2_____ an end! Eleven kilometers

3_____ (direct) below the city the greatest earthquakes of the 20th century began. It was heard in Beijing,

4_____ is one hundred kilometers away. One-third of the nation felt it. A huge crack that was eight kilometers

long and thirty meters wide cut 5_____ houses, roads and canals. Steam burst from 6_____ (hole) in the

ground. Hard hills of rock became nvers of dirt. In fifteen terrible seconds a large city lay in ruins. Two-thirds

of the people died or 7_____ (injure) during the earthquake. Thousands of families 8_____ (kill) and many

children were left 9_____ parents. The number of people 10_____ were killed or injured reached more than

400,000.