1. Why does the professor discuss Gila monsters?
A. As an example of an animal that is highly venomous
B. As an example of an animal that has adapted to living in deserts
C. As an example of an animal that might seem difficult to classify
D. As an example of an animal whose behavior is not well understood


2. What reason does the professor give for classifying Gila monsters as lizards?
A. Their venom is more dangerous than snake venom.
B. Their colors blend with the desert surroundings
C. They have skeletal features common to all lizards.
D. They reproduce the same way as lizards do


3. According to the professor, when do Gila monsters use their venom?
A. When their efforts to hide from danger fail
B. When they are hunting large prey
C. When they are digesting their food
D. When they are invading the territories of other Gila monsters


4. Why does the professor mention chemical compounds in Gila monster venom?
A. To support her argument that Gila monsters must be protected
B. To cite a practical use of Gila monster venom
C. To support the idea that snakes and Gila monsters should be classified together
D. To compare the strength of snake and Gila monster venom


5. Why does the professor say this:
A. To determine whether the students are familiar with Gila monsters
B. To introduce a personal story about her hometown
C. To challenge a statement from one of the students
D. To encourage the students to do more research on animals from the Southwest


6. Why does the student say this:
A. To make sure that he is looking at the right picture
B. To suggest that the professor’ s explanation needs to be clarified
C. To give an example that supports what the professor has just said
D. To point out that the professor’s description differs from the book’s description

答案:C C A B A B


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