Directions: This part consists of a short passage. In this passage, there are altogether 10 mistakes, one in each numbered line. You may have to change a word, add a word or delete a word. Mark out the mistakes and put the corrections in the blanks provided. If you change a word, cross it out and write the correct word in the corresponding blank. If you add a word, put an insertion mark (∧) in the right place and write the missing word in the blank. If you delete a word, cross it and put a slash (/) in the blank.

Example:

Television is rapidly becoming the literature of our periods/. 1. time/times/period
Many of the arguments having/ used for the study of literature as 2. __\______
a school subject are valid for ∧ study of television. 3. ___the__

When you board a plane, a machine may soon be scanning more than your bags—it may be studying your face. A computer comes onto the market recently which (71) promises to be able to recognize faces at a glance from a video (72) camera.

The system, known as PRES, has many possible use in (73) different fields but the most prominent is like to be monitoring (74) crowds at airports for known terrorists. Such a task is far from the capabilities of a conventional image processor, which is too quick to be of practical use. Moreover, it is too easily (75) confused: if image of a face in its memory is only a frontal (76) view. For example, they might not recognize that same face (77) when presenting with a side view of the face. (78)

PARES relies in the new technology of neural (神经的) (79) networks. Like the brain, it has many interconnected memory “cells”, which work simultaneously rather than in sequence and thus greatly speed up the computation. And like the brain, the neural network can be trained to concentrate on essentials while ignoring of inessential matters-it can “learn” what’s (80) important and what isn’t. But the training is boring: an operator must patiently correct the computer’s mistakes.

Part V Writing (30 minutes)