盆腔位阑尾炎时，可引起下列那些症状
A．恶心，呕吐
B．大便秘结
C．腹胀
D．肠麻痹
E．里急后重
参考答案：E
Only when class began _____ that he had left his book at home. [ ]
A. will he realize
B. he did realize
C. did he realize
D. should he realize
下列热化学方程式正确的是(ΔH的绝对值均正确)( )
A．C2H5OH(l)+3O2(g)2CO2(g)+3H2O(g) ΔH="-1" 367.0 kJ·mol-1(燃烧热)
B．NaOH(aq)+HCl(aq)NaCl(aq)+H2O(l) ΔH="+57.3" kJ·mol-1(中和热)
C．S(s)+O2(g)SO2(g) ΔH="-269.8" kJ·mol-1(反应热)
D．2NO2O2+2NO ΔH="+116.2" kJ·mol-1(反应热)
2CO2(g)+3H2O(g) ΔH="-1" 367.0 kJ·mol-1(燃烧热)