肋骨骨折是以（）
A.1～3肋骨骨折多见
B.4～7肋骨骨折多见
C.8～10肋骨骨折多见
D.11～12肋骨骨折多见
E.6～9肋骨骨折多见
参考答案：B
解析：肋骨骨折以第4～7肋骨多见；第1～3肋骨较短，且有锁骨、肩胛骨和肌肉保护，较少发生骨折；第8～10肋骨前端与胸骨连成肋弓，弹性较大，不易骨折；第11～12肋骨前端游离、不固定，较少发生骨折。
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| My aunt ① in Suzhou. But she often comes to Nanjing to see ② ③ . She usually arrives on Saturday morning and goes ④ with my mother ⑤ Sunday. But I like to get up ⑥ ⑦ the weekend. Last week, my aunt arrived on Saturday, I ⑧ in bed. "Get up, dear. It's bad ⑨ your health (健康)." "But I ⑩ my homework late last night. I want to sleep more. " |
| （ ）①A. lives （ ）②A. we （ ）③A. by a train （ ）④A. shop （ ）⑤A. on （ ）⑥A. later （ ）⑦A. of （ ）⑧A. was （ ）⑨A. for （ ）⑩A. doing | B. live B. our B. by the train B. shops B. in B. late B. on B. were B. from B. does | C. live C. ours C. by train C. shopping C. of C. earlier C. in C. are C. to C. do | D. living D. us D. by bike D. shopped D. at D. early D. at D. am D. in D. did |
