流行性脑脊髓膜炎的主要病变
A．脑膜炎症渗出B．脑内出血C．脑内脱髓鞘性改变D．神经细胞肿胀、变性、坏死E．脑神经细胞退行性病变
参考答案：A
Not until ________ the exam ________ the importance of doing homework. [ ]
A. had he failed; he realized
B. he had failed; did he realize
C. he had failed; he realized
D. had he failed; did he realize
1901年《辛丑条约》签订的消息传出，全国上下一片哗然，国人议论纷纷，忧心忡忡。下列议论符合史实的一项是
A．割让香港岛，开放口岸，丧权辱国
B．清政府实际上已成为“洋人的朝廷”
C．允许外国人在中国开办工厂，中国民族工业没指望了
D．清政府的统治已经被洋人的统治完全取代了
