伤寒侵犯()
A.胃
B.空肠
C.回肠
D.结肠
E.全食管
参考答案:C
解析:
伤寒损害的是全身单核吞噬细胞系统,表现在肠道淋巴组织,肠系膜淋巴结,其中又以回肠淋巴组织改变明显。
Last year I caught the baby cuckoo and put 56. ______ it in a cage outside. Later its mother flew from the cage 57. ______ with food in her mouth. I was happy to see this, because of 58. ______ the mother bird knew much better than I did to feed her 59. ______ baby. But the following morning I found the baby bird60. ______ died. I told the story of my bird to my biology teacher 61. ______ and he explained that what had happened. A mother 62. ______ cuckoo, finds her baby in a cage, will bring it poison63. ______ food. She believes it is good for her baby to die than to 64. ______ live in a cage. I still feel sorry for what I do to the bird.65. ______
学习了电学知识以后,好学的李明仔细观察了家中电热水壶的铭牌(如下表),电热水壶正常工作时的功率为________W 他将电热水壶中装满水,通电1.5 min后,测出水温从20℃上升到40℃。在此过程中,水吸收热量___________J[c水= 4.2×103J/(kg.℃)]