B1L4: Sniffing out More than Just Bones

龍騰B1L4 克漏字測驗

Have you ever noticed that dogs are able to smell things that we can’t? This is because a dog’s (1) of smell is far more sensitive than a human’s. (2) this reason, some dogs are specially trained to become sniffer dogs (3) use their keen sense of smell to detect (4) items such as hidden drugs. But this isn’t the only task that sniffer dogs can (5) . Here are (6) more interesting ways that these (7) animals can help humans out.

In Pingtung, officials in one park use (8) dogs to find trees that have “brown root rot” disease. (9) their keen sense of smell, the dogs can detect infected trees. (10) they locate such a tree, they sit down beside it until their trainer hands them a treat as a reward. Workers then dig out these trees before they fall and hurt people. (11) they have realized how useful these sniffer dogs can be, officials in parks across Taiwan are inviting them to come and help find the trees with brown root rot disease.

Sniffer dogs’ ability to detect sickness can be used for more than just locating sick trees. They have also been trained to (12) the onset of certain diseases in humans. Maria Tello, who was a 58-year-old woman with diabetes, was asleep one night. All of a sudden, her dog Malachi opened its eyes and got up. (13) using its powerful nose, it could sense that Maria’s blood sugar was dropping to a dangerously (14) low level. Malachi woke her up and then rushed to get her medicine. It (15) that Malachi saved Maria’s life in this way four more times that year.

How can sniffer dogs (16) to do the above-mentioned* tasks? The answer is that diseases cause chemical* changes in plants, animals, and even the human body. These chemical changes usually create special odors, and trainers need to (17) their dogs (17) these smells many times. The dogs are then taught to perform a certain kind of (18) as an alert, such as sitting down or barking, when they come across these smells. Once their training is complete, sniffer dogs (19) carry out specific duties.

Dogs really are our best friends. (20) we continue to understand them better, they can help us more. Who knows in what other ways their spectacular* sense of smell will be useful to us in the future?

1. (A) authority (B) conscience (C) sense (D) feeling
2. (A) For (B) As (C) Under (D) In
3. (A),that (B) that (C) which (D),which
4. (A) either (B) certain (C) any (D) both
5. (A) accomplish (B) wonder (C) avoid (D) float
6. (A) a little (B) little (C)a few (D) few
7. (A) amaze (B) amazed (C) to be amazed (D) amazing
8. (A) training (B) trained (C) train (D) trains
9. (A) Except for (B) Due to (C) Instead of (D) Thanks to
10. (A) Once (B) After (C) Since (D) Although
11. (A) Since (B) Although (C) Until (D) Likewise
12. (A) impress (B) awake (C) breathe (D) predict
13. (A) In (B) On (C)By (D) With
14. (A) emotionally (B) dangerously (C) carefully (D) silently
15. (A) ended up (B) led to (C) resulted in (D) turned out
16. (A) manage (B) increased (C) produce (D) forbid
17. (A) try; to (B) adapt; to (C) connect ; to (D) expose; to
18. (A) fantasy (B) behavior (C) evidence (D)surface
19. (A) be assigning to (B) being assigned to (C) assigned to (D) are assigned to
20. (A) As (B) With (C) Since (D) For

Answer:

1-5 CADBA

6-10 CDBBA

11-15 ADCBD

16-20 ADBDA