Question

A.mark   B. checked  C. population   D. destroyed  E.chemicals

In Tanzania, an African country, a company called APOPO trains African pouched rats(非洲有袋鼠）to find landmines(地雷）left over from the wars. The rats are trained to smell out some of the_小題1:__  in them. More importantly, these rats are too light to set off the landmines.
Generally speaking, after 8 to 12 months of training, the rats can find landmines so that they can be safely destroyed. Rats and trainers search one small area at a time. To be sure that every inch of the ground is _小題2:_, APOPO workers use a harness-and-rope system that guides the rats back and forth in rows. The trainer stands safely on the edge(邊緣) of the area.
When a rat smells landmines, it will dig the dirt in that spot(地點). The trainers __小題3:_ each spot on a map. Later, people set off the landmines safely.
In the African country of Mozambique, nearly half of the ___小題4:__ are younger than 15 years old. A lot of kids are in danger as they play and work. With the help of the rats and trainers, there will be no threat any more.

Answer 1

小題1:E
小題2:B
小題3:A
小題4:C

試題分析：短文大意：在坦桑尼亞，一個非洲國家，一家名為APOPO的公司在訓練非洲囊鼠尋找戰(zhàn)爭留下的地雷。
小題1:句子的意思為“這些老鼠被訓練成聞出地雷中的……味”，而且在定冠詞the后面肯定跟一個名詞。根據所提供的兩個名詞，本題答案為chemicals(化學藥品)。
小題2:句子的意思為“確保每一寸土地……”，可能填“形容詞”或“被動語態(tài)”，根據前句意思“老鼠和工作人員搜尋更小的區(qū)域”，所以本題答案為checkecd(被檢查)。
小題3:句子的意思為“當老鼠聞出地雷后，挖出。然后工作人員對于這個地點在地圖上進行……”，根據意思應該填一個動詞，根據前句和后句的時態(tài)，應為“一般現在時”，所以本題答案為mark(標記)。
小題4:句子的意思為“將近一般的……都小于15歲”，根據意思肯定填一個名詞，那么就是“一般的人(口)”，所以本題答案為population(人口)。