急性血源性骨髓炎，在X线摄片上出现异常的最早时间为病后（）。 A.1周 B.2周 C 发布时间：2017-05-03 04:31 │ 来源：www.tikuol.com 题型：单项选择题 A1/A2型题 问题： 急性血源性骨髓炎，在X线摄片上出现异常的最早时间为病后（）。A.1周B.2周C.3周D.1个月E.2个月
题型：单项选择题 A1/A2型题 完形填空。Dear Helen, Today is Sunday. I 1 go to school. I stay 2 home. I'm writing to you now. I go to school 3 seven thirty every morning. We have four lessons 4 the morning. We read and write Chinese 5 school. 6 forty students in my class. Four 7 them are Americans, two Englishmen, five Frenchmen and two Australians. The other students are Chinese. Chinese people are 8 . There 9 a map of China 10 the white wall in our classroom. China is great. My classmates are all friends. They teach us Chinese. I teach them English. We play football in the afternoon. We are very happy! Please write to me soon. Yours, Lucy ( )1. A. do ( )2. A. in ( )3. A. at ( )4. A. at ( )5. A. under ( )6. A. There be ( )7. A. on ( )8. A. friendly ( )9. A. be ( )10. A. in B. don't B. on B. near B. with B. with B. There isB. of B. friend B. are B. on C. can C. at C. behind C. on C. about C. There are C. in C. friends C. is C. with D. can't D. of D. about D. in D. at D. Have D. at D. love D. am D. about 查看答案
题型：单项选择题 A1/A2型题 如右图所示，平行线代表电场线，但未标明方向，一个带正电、电量为10－6 C的微粒在电场中仅受电场力作用，当它从A点运动到B点时动能增加了10－5 J，已知A点的电势为－10 V，则以下判断正确的是：( ) A．微粒的运动轨迹如图中的虚线1所示B．微粒的运动轨迹如图中的虚线2所示C．B点电势为零D．B点电势为－20 V 查看答案
