[简答题]The machine is cost-effective because it has higher productivity, greater versatility and easier to use.

[单项选择]Mrs. White has a hard time because she has six children（）
A. look after
B. to be looked after
C. to look after
D. looking after

[单项选择]

Each machine supporting TCP has a TCP transport entity, either a library procedure, a user process, or part of the kernel. In all case, it manages TCP streams and（）to the IP layer. A TCP（）accepts user data streams from local process, breaks them into pieces not exceeding 64KB, and sends each piece as a separate IP（）. When datagrams containing TCP data arrive at a machine, they are given to the TCP entity, which reconstructs the original byte streams.
The IP layer gives no guarantee that datagrams will be delivered properly, so it is up to TCP to time out and（）them as need be. Datagmms do arrive may well do so in the wrong order, it is also up to TCP to（）them into messages in the proper sequence.

it manages TCP streams and（）to the IP layer.
A. calls
B. interfaces
C. links
D. produces

[单项选择] New dictionaries are needed because English has changed more in the past two generations than at any other time in its history. It has had to adapt to extraordinary cultural and technological changes, two world wars, unparalleled changes in transportation and communication, and unprecedented (史无前例的) movements of populations. More subtly, but pervasively, it has changed under the influence of mass education and the growth of democracy. As written English is used by increasing millions and for more reasons than ever before, the language has become more utilitarian (功利的, 实利的) and more informal. Every publication in America today includes pages that would appear, to the purist of forty years ago, unbuttoned gibberish (莫名其妙的). Not that they are; they simply show that you can’’t hold the language of one generation up as a model for the next. It’’s not that you mustn’’t. You can’’t. For example, in the issue in which Life stated editorially that it would follow the Second Intern
A. Because the publishing house wants to earn more money.
B. Because there are many changes in English in order to adapt to great changes in the past forty years.
C. Because the old version of dictionaries were destroyed in two world wars.
D. Because there are lots of cultural movements in the world.

[填空题]People enjoy shopping there because it has modern shops, together with the atmosphere of a (tradition)（）street market.

[填空题]Why does he feel proud Because he has helped to make the park ______.

[单项选择]The director is disappointed because he has not found anyone in the applicants who is particularly qualified for this job. （）
A. 已经任命了主任，因为只有他有能力去寻找适合做这项工作的求职者。
B. 已经任命了主任，因为只有他才有资格去挑选肯做这项工作的求职者。
C. 主任非常失望，因为他还没有在这些求职者中发现具有特殊资质的人。
D. 主任很失望，因为他还没在求职者中找到特别有资格做这项工作的人。