[单项选择]If two events can not both occur in a single trial, they are ______ .
A. false events
B. mutually exclusive
C. statistically independent
D. just in time

[单项选择]

Passage Two
Can animals be made to work for us Some scientists think that one day animals may be trained to do a number of simple jobs that are now done by human beings. They point out that at a circus, for example, we may see elephants, monkeys, dogs and other animals doing quite skillful things. Perhaps you have seen them on the television or in a film. If you watch closely, you may notice that the trainer always gives the animal a piece of candy or a piece of fruit as a reward. The scientists say that many different animals may be trained to do a number of simple jobs if they know they will get a reward for doing them. Of course, as we know, dogs can be used to guard a house, and soldiers in both old and modem times have used geese to give warning by making a lot of noise when a stranger or an enemy comes near. But it may be possible to train animals to work in factories. In Russia, for example, pigeons which are birds with good eyesight, are being used to watch
A. Scientists consider apes may drive trains some day.
B. Apes have worked in some factories.
C. Apes may one day be used to gather crops.
D. An ape is not a large monkey.

[多项选择]Which two can be used to create and apply an export policy that advertises static routes to RIP neighbors?（）
A. set protocols rip export demo
B. edit policy-options policy-statement demo set term 1 from protocol static set term 1 then accept
C. edit policy-options policy-statement demo set term 1 from protocol static
D. set policy-options policy-statement demo

[单项选择]Capital market trading can only occur in the secondary market because most investors plan to sell long - term bends before they reach maturity and eventually to sell their holdings of stock as well.

[单项选择]Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply (UPS)?（）
A. There is a fire hazard potential if a power outage occurs.
B. The last system plugged into the UPS will not be provided any power.
C. The UPS will draw more power from the circuit to compensate.
D. The runtime of the UPS will be insufficient if a power outage occurs.

[单项选择]Morphemes that can occur "unattached" are called______ morphemes.
A. inflectional
B. bound
C. free
D. derivational

[多项选择]Which two are characteristics of both Kompella and Martini-based VPNs? （）
A. label stacking
B. auto-provisioning
C. circuit status vector
D. Martini Encapsulation
E. LDP-based control plane

[单项选择]What two problems can be solved by burning garbage
A. The shortage of energy and air pollution.
B. The shortage of energy and the shortage of empty land for holding garbage.
C. Air pollution and the shortage of empty land for holding garbage.
D. Air pollution and the shortage of fossil fuel.

[多项选择]In which two ways can you influence how downstream LSRs treat MPLS traffic?（）
A. Use an EXP rewrite table.
B. Use a DSCP rewrite table.
C. Statically assign a CoS value to an LDP-signaled LSP.
D. Statically assign a CoS value to an RSVP-signaled LSP.

[多项选择]Which two locations can be configured as a source for the IOS image in the boot system command?（）
A. RAM
B. NVRAM
C. flash memory
D. HTTP server
E. TFTP server
F. Telnet server

[单项选择]

Passage Two How can a single postage stamp be worth $ 16,800 Any mistake made in the printing of a stamp raises its value to stamp collectors. A mistake on one in expensive’ postage stamp has made the stamp worth a million and a half times its original value. The mistake was made more than a hundred years ago in the British colony of Mauritius, a small is land in the Indian Ocean. In 1847 an order for stamps was sent to a London printer, and Mauritius was to become the fourth country in the world to issue stamps. Before the order was filled and delivered, a ball (舞会) was planned at Mauritius’ Government House, and stamps were needed to send out the invitations. A local printer was instructed to copy the de sign for the stamps. He accidentally inscribed the words "Post Office" instead of "Post Paid" on the sever al hundred stamps that he printed. Today there are only twenty-six of these misprinted stamps left--fourteen "One Penny Orange-
A. spelling of postage
B. price
C. wording
D. color