第1题:
A、enhance the students' communicative competence
B、combine pronunciation, vocabulary and grammar
C、Combine words,phrases and sentences
D、use body language and pictures
第2题:
A.It requires the use of ARP.
B.It can support multiple IPv6 subnets on a single link.
C.It supports up to 2 instances of OSPFv3 over a common link.
D.It routes over links rather than over networks.
第3题:
We can learn from the last paragraph that the author believes ________.
[A] happiness more often than not ends in sadness
[B] the anti-happy art is distasteful but refreshing
[C] misery should be enjoyed rather than denied
[D] the anti-happy art flourishes when economy booms
第4题:
In order to acquire a second language, learners will subconsciously use their first language knowledge in learning a second language. This is know as language t().
transfer
略
第5题:
第6题:
In looking at the class structure of an entire system, we may find that its inheritance (1) is either wide and shallow, narrow and deep, or balanced. Class structures that are wide and shallow usually represent forests of (2) classes that can be mixed and matched. Class structures that are narrow and deep represent trees of classes that are related by a common ancestor. There are advantages and disadvantages to each approach. Forests of classes are more loosely (3) , but they may not exploit all the commonality that exists. Trees of classes exploit this commonality, so that individual classes are smaller than in forests. However, to understand a particular class, it is usually necessary to understand the meaning of all the classes it inherits from or uses. The proper shape of a class structure is highly problem-dependent. We must make similar trade-offs among inheritance, aggregation, and using relation- ships. For example, should the class Car inherit, contain, or use the classes named Engine and Wheel? In this case, we suggest that an (4) relationship is more appropriate than inheritance relationship. Meyer states that between the class A and B," (5) is appropriate if every instance of B may also be viewed as an instance of A. The client relationship is appropriate when every instance of B simply possesses one or more attributes of A". From another perspective, if the behavior. of an object is more than the sum of its individual parts, then creating an aggregation relationship rather than an inheritance relationship between the appropriate classes is probably superior.
A.distinction
B.level
C.grade
D.hierarchy
第7题:
第8题:
此题为判断题(对,错)。
第9题:
第10题:
The()approach to language study is concerned with language as an instrument of social interaction rather than as a system that is viewed in isolation.
functional
略