比较理想的阻滞麻醉药是
A．普鲁卡因 B．利多卡因 C．丁卡因 D．可卡因 E．氯乙烷
参考答案：B
句型转换。
1. Ann, did her homework yesterday evening.(对划线部分提问)
_____ _____Ann _____ yesterday evening?
2.The children had a good time in the park. (对划线部分提问)
_____ _____ the children _____ a good time?
3. They read English last night.(对划线部分提问)
_____ _____ they _____ English?
射达海面的太阳总辐射是太阳直达辐射和（）辐射两部分之和。
