In this incident, the intruder or intruders When did the owner notice the incident A: On Wednesday. B: On Thursday. C: On Friday. D: On Saturday.

60.A(n) ______ is hardware and/or software that protects a computer or a network from intruders. A: Web log B: worm C: firewall D: public key

In this incident, the intruder or intruders In this incident, the intruder or intruders A．killed more than ten rare birds. B．closed the door when leaving. C．threatened to kill the rare animals. D．damaged the walls of the zoo. A: killed more than ten rare birds. B: closed the door when leaving. C: threatened to kill the rare animals. D: damaged the walls of the zoo.

Questions 1--3 Choose the best answer. Dian Fossey ______. A: believed it is the government’s responsibility to enforce laws to protect wildlife. B: believed that human activity should not be allowed in the habitat of the mountain gorillas. C: illegally drove out the people who were considered intruders from the park. D: helped the government enforce laws in the habitat of the mountain gorillas.