[单项选择]

Routing protocols use different techniques for assigning (81) to individual networks. Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal (82) . Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load (83) can improve overall allocation of network bandwidth. When multiple paths are used, there are several ways to distribute the packets. The two most common mechanisms are per-packet load balancing and per-destination load balancing. Per-packet load balancing distributes the (84) across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on (85) .

（82）是（）
A. user
B. distance
C. entity
D. cost

[单项选择]

Routing protocols use different techniques for assigning (81) to individual networks. Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal (82) . Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load (83) can improve overall allocation of network bandwidth. When multiple paths are used, there are several ways to distribute the packets. The two most common mechanisms are per-packet load balancing and per-destination load balancing. Per-packet load balancing distributes the (84) across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on (85) .

（81）是（）
A. calls
B. metrics
C. links
D. destinations

[单项选择]A) The use of hands. B) Different ways of expressing politeness.
C) Customs of ancient times. D) The meaning of the hand and its actions.

[单项选择]Different cultures have different communication （　）.
A. styles
B. signals
C. designs
D. symbols

[填空题]Different teachers make different contributions to a student’s ______ (grow)

[填空题]Different areas have experienced different effects of the climate change.

[填空题]Different countries and different races have different (11) . In China, it is important for the host to be attentive towards the guest. The host shows this by (12) that the guest’ s glass is always full and that there is always (13) food in his bowl. It is considered unnecessary to ask whether the guest wants more. In contrast, in England the host may behave more informally. The host (14) , places the food in the middle of the table and tells the guest to help himself. It is considered unacceptable to (15) food or drink upon a guest, so the host never gives him anything without first checking whether he wants it.Different countries and different races have different (11) . In China, it is important for the host to be attentive towards the guest. The host shows this by (12) that the guest’ s glass is always full and that there is always (13) food in his bowl. It is considered unnecessary to ask whether the guest wants

[多项选择] Different people have different character traits. Each of us is unique. Are our essential qualities in character inherited at birth or conditioned by circumstances Write an essay stating your view on this question.
Requirement:
In the first part of your writing you should present your thesis or view. In the middle part you should support your view with examples or details, and then your writing should have a good conclusion. Marks will be awarded for content, grammar and appropriateness. Failure to follow the above instructions’ may result in a loss of marks.
Length: Approximately 400 words.
Write your essay on ANSWER SHEET FOUR.