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Exercise One: Fill in the blanks with words or phrases from the box below. Change the form where necessary.1.It will be a close game. The _____ is hard to predict.2.Travelers on a tight _____ would choose to go there by train instead of by plane.3.Tom was _____ leaving the garden when he heard someone cry: “Isn’t it Tom? I can hardly believe my eyes.”4. _____ is what we need when we design new products.5.The problem turned out to be far more _____ than he had _____.6.The works in this room are _____ by local artists. They embody the artists’ vision of a peaceful and environment-friendly _____.7.Water, though _____ in Brazil, is extremely unevenly _____ among its regions.8.Even today, my first English teacher’s encouraging words still _____.9.Henry has many friends working in the government. His _____ of information are usually _____.10.These figures show that the death _____ of road accident gets higher as the speed of the car increases.11.With water demand growing, the _____ between the two neighboring villages over water has _____ over the years.12.Years ago the professor said that there was no doubt that the people in this city would _____ a water shortage, if not a water crisis. _____ events have proved his predictions to be exactly right.13.The TV program _____ the aftermath of the Paris terrorist attacks.

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Exercise Two: Replace the underlined part in each of the following sentences with a word or phrase from the box below. Write your answer in the brackets. Make changes or additions where necessary.1. You see the lights in the students’ reading room? They never go out at night these days because the final exams are drawing near. ( )2. With the money from her uncle, Jenny was able to enroll in a dancing school and chase her childhood dream of becoming a dancer. ( )3. The high-rise building in the back makes our old house seem small. ( )4. The figures show that our economy is healthy and we are likely to achieve sustainable and balanced (平衡的) growth. ( )5. The two girls spent the whole night planning the summer events, get-togethers, dinner parties, and many other things of the kind. ( )

()轮系是不能用转化轮系传动比公式求解。

A. 定轴
B. 混合
C. 行星
D. 差动

每个单一周转轮系中心轮的数目为()。

A. 3
B. 2
C. 1
D. 1或2

计算机安全包括____。

A. 系统安全
B. 物理安全
C. 信息安全
D. 以上皆是

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