听力原文：W: Why are you late？
M: I'm sorry, but next time I'll be in time to have classes.
What's the relationship between them？
A. Teacher and student.
B. Doctor and patient.
C. Boss and worker.
查看答案
The word "nuisance" refers to ______.
A. annoyance
B. benefits
C. inconvenience
D. clearness
听力原文：M: Here is the money. Keep the change.
W: Thank you.
What can we learn from the conversation？
A. The man has given the change to the driver.
B. The driver doesn't want the change.
C. The man wants the driver to change his money.
What can you infer from the passage about breeding among Lycaon pictus？ ______
An individual's ability to breed is related primarily to its rate of growth.
Breeding is the only task performed by the breeding female.
C. Breeding in the social group is not cooperative.
D. Breeding is not dominated by a single pair of dogs.
In which of the following ways does the performance of tasks in naked mole rat colonies differ from task performance in eusocial insect societies？ ______
A. In naked mole rat colonies, all tasks are performed cooperatively.
B. In eusocial insect societies, reproduction is limited to a single female.
C. In naked mole rat colonies, breeding is limited to the largest animals.
D. In naked mole rat colonies, the performance of tasks is less rigidly determined by body shape.
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