可引起上消化道出血的疾病有
A．反流性食道炎
B．消化性溃疡
C．胰腺癌
D．尿毒症
E．系统性红斑狼疮
参考答案：A,B,C,D,E
—I have just received another message, telling me I have won a big prize.
—Don't jump on it. You ________.
A．should be cheated
B．are being cheated
C．are cheating
D．must have cheated
在中和反应反应热的测定实验中，一定不需要使用的仪器是 [ ]
A．量筒
B．搅拌棒
C．容量瓶
D．温度计
