张警官一年内参与破获的各类案件有100多件，是王警官的5倍，李警官的五分之三，赵警官的八分之七，问李警官一年内参与破获了多少案件( )
A．175
B．105
C．120
D．不好估算
参考答案：A
解析：[解一] 设张警官一年破获x件，则100＜x＜200，李警官破获的各类案件有166＜53x＜10003。只有A项符合。 [解二] 由四警官破案的关系知，张警官破获了5×3×7×N件，又因100＜x＜200，故张警官破获了105件，李警官破获了105×53=175件。
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| One Sunday afternoon, Mr Green was walking in the park. He ① for some time and ② a little tired. He saw a chair ③ the big tree and wanted to sit down. At this time he saw a woman was in front of him. So he began to walk ④ for fear that (害怕) the woman would ⑤ the seat before ⑥ . At the same time the woman also started ⑦ . At last Mr Green ⑧ the seat and was very happy. The woman ran after him and shouted, telling him not to sit on the chair. Because the woman ⑨ up with a notice board. It ⑩ "WET PAINT" (油漆未干) . |
| （ ）①A. walking （ ）②A. feel （ ）③A. on （ ）④A. slower （ ）⑤A. take （ ）⑥A. her （ ）⑦A. run （ ）⑧A. took （ ）⑨A. come （ ）⑩A. say | B. walked B. feels B. in B. slow B. takes B. his B. runs B. take B. came B. said | C. walks C. felt C. under C. fast C. took C. he C. ran C. takes C. comes C. says | D. to walk D. feeling D. behind D. faster D. taking D. him D. to run D. taking D. coming D. saying |