[单项选择]The two factors concerning hurricanes that scientists most want to learn about are ______.
A. conditions in the "eye" and conditions at the edge
B. the forces that generate them and theft frequency
C. the number of people injured and the amount of damage done
D. how fast and where they move

[单项选择]The two factors concerning hurricanes that scientists most want to learn about are
A. conditions in the "eye" and conditions at the edge.
B. the forces that generate them and their frequency.
C. the number of people injured and the amount of damage done.
D. how fast and where they move.

[单项选择]The book, Dialogue Concerning the Two Chief World Systems ______.
A. was published secrectly
B. did not get the permission from the pope
C. supported Copernicanism publicly
D. was immediately accepted throughout Europe

[多项选择]Which two statements are correct concerning DHCP Internal Server and DHCP External Server in the E-series router? （）(Choose two.)
A. They provide dynamic IP addresses for DSIs.
B. They provide dynamic IP addresses for SRC applications.
C. They provide dynamic IP addresses from pools for PPPoE subscribers.
D. They provide dynamic IP addresses from pools for Routed IP subscribers.

[多项选择]Which two statements are true concerning the Resource Manager plans for individual pluggabledatabases (PDB plans) in a multitenant container database (CDB)?（）
A. If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that pdb.
B. In a PDB plan, subplans may be used with up to eight consumer groups.
C. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the cdb.
D. If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.
E. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.

[单项选择]Which of the following two factors are most likely to be considered variable during the short run（）
A. Labor and technology.
B. Labor and raw materials.
C. Raw materials and technology.

[单项选择]

Passage Three Edmund Halley was an English scientist who lived over 200 years ago. He studied the observations of comets (彗星) ,which other scientists had made. The orbit (轨道) of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems. However, Halley had a friend named Newton, who was a brilliant mathematician. Newton thought he had already worked out that problem, but he could not find the papers on which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse (椭圆形) . Now Halley set to work. He figured out the orbits of some of the comets that had been observed by scientists. He made a surprising discovery. The comets that appeared in the years 1531,1607, and 1682 all had the same orbit. Yet their appearances had been 75 to 76 years apart. This seemed very strange to Halley. Three different comets followed the same orbit. The more Halley thought abo
A. 1704
B. 1705
C. 1706
D. 1707

[多项选择]Which two statements concerning STP state changes are true？ （）
A. Upon bootup，a port transitions from blocking to forwarding because it assumes itself as root.
B. Upon bootup，a port transitions from blocking to listening because it assumes itself as root.
C. Upon bootup，a port transitions from listening to forwarding because it assumes itself as root.
D. If a forwarding port receives no BPDUs by the max_age time limit， it will transition to listening.
E. If a forwarding port receives an inferior BPDU， it will transition to listening.
F. If a blocked port receives no BPDUs by the max_age time limit， it will transition to listening.

[单项选择]

Passage Five Many animals are used to help scientists find cures for diseases. One of the most common animals used is monkeys, or primates. There are groups of people who want to stop the research on animals. They are called animal rights activists. The scientists say their research could help save the lives of many men, women and children. They try to cure diseases like cancer and AIDS. The animal rights activists say the animals suffer. They take baby monkeys away from their mothers, and sometimes holes are drilled in their heads. The activists have tried to stop the research for the past 10 years. They let animals go free or damage the labs. The University of California at Davis has 3,800 rhesus macaque monkeys. It is one of the largest primate research labs. The activists sent letters to researchers at Davis and about eighty other researchers around the country, whose names were on the web pages. The warning letters had razor blades hidden so that a person could slice
A. In the newspaper.
B. On the radio.
C. On a web page.
D. On the television.

[单项选择]In seeking to solve their problems, social scientists encounter greater resistance than physical scientists.
A. 在寻找解决问题的方法时，社会学家比物理学家遇到的阻力更大。
B. 为了要寻找解决问题的方法；社会学家同物理学家一起遇到了相当大的阻力。
C. 在探索如何解决他们的问题时，社会科学家比物理科学家有了更伟大的发现。
D. 在探讨解决问题的方法时，科学家比物理科学家还要有更大的阻力。

[单项选择]It can be inferred from the passage that a scientist devoted himself to study the nature of the carbon dioxide likely belongs to those dedicated to______.
A. pure science
B. applied science
C. environmental science
D. ecological science

[单项选择]What’s the purpose of the campaign British scientists are launching
A. To calculate the number of endangered creatures in British wildlife conservation.
B. To save some of the most unusual creatures ignored by other conservation programs.
C. To raise public awareness about the protection of highly endangered species.