题目内容
（请给出正确答案）
A.Alfred J. Lotka
B.Samuel C. Bradford
C.V.V. Nalimov
D.A.I. Yablonsky
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A、We are writing to you to make our packaging requirements as follows.
B、We hope you will find our packaging requirements acceptable and are looking forward to your confirmation.
C、We hope you can understand our status and await for your decision.
D、It’s our usual practice to use cardboard cartons instead of wooden cases, as packaging in cardboard cartons has the following advantages.
A、Z(t) is a stationary process
B、Sz(f) = Sx(f) + Sy(f)
C、Sz(f) = Sx(f) + Sy(f) + Sxy(f) + Syx(f)
D、If the two processes X(t) and Y(t) are uncorelated and at least one of the processes is zero mean，then Sz(f) = Sx(f) + Sy(f)
In recent decades, cities have grown so large that now about 50% of the Earth's population lives in urban areas. There are several reasons for this occurrence. First, the increasing industrialization of the nineteenth century resulted in the creation of many factory jobs, which tended to be located in cities. These jobs, with their promise of a better material life, attracted many people from rural areas. Second, there were many schools established to educate the children of the new factory laborers. The promise of a better education persuaded many families to leave farming communities and move to the cities. Finally, as the cities grew, people established places of leisure, entertainment, and culture, such as sports stadiums, theaters, and museums. For many people, these facilities made city life appear more interesting than life on the farm, and therefore drew them away from rural communities. (source: http://lrs.ed.uiuc.edu/students/fwalters/cause.html) Is this a cause paragraph or an effect one? Give your explanations.
A．ranged
B．aged
C．ranked
D．listed
A、rules
B、rulers
C、roles
D、roles
A、allowed
B、entitled
C、permitted
D、enabled
A、B lymphocytes
B、T lymphocytes
C、myeloma
D、Hybridoma
•Read the Chairman's Statement below.
•For questions (23-28), choose the correct answer.
•Mark one letter (A, B or C) on your Answer Sheet.
Chairman's Statement
Despite the appearance of a new competitor on the market, the company continued to grow and increase its market share throughout 2000. Partly in response to this new threat, but more importantly, as part of a strategy for growth, several key decisions were taken this year. The most significant new developments included a range of vitamin-rich drinks for children and low calorie diet drinks, which both proved very popular.
The company is still best known for its range of refreshing fruit drinks and, not surprisingly, these were our biggest sellers once more. There were two new additions to the range last year, Squish! and Liquid Sunshine, both of which have a distinctive Caribbean flavour. The first sales figures suggest that our expensive TV advertising campaign was very successful and that these products will soon be as popular as the rest of the fruit drink range.
Growth in the keep-fit and health markets meant our energy drinks did well in 2000. Sales of one brand, Booster were second only to fruit drinks in April. The strength of this particular market also explains the success of our new diet drinks.
There were, however, big differences in the performance of our older products. The company's oldest product, mineral water, continued to enjoy a healthy share of a very profitable mass market. It seems our customers are still happy to stay with the brand despite the increasing number of competitors' products. Unfortunately, the same cannot be said of our Ice-T and Chocomania drinks. Sales showed an initial increase in the summer after we re-launched both products but customers soon bought other brands and total annual sales for both product ranges were disappointing.
The company also said goodbye to its own brand of cola, launched in 1998. After two unsuccessful years of trying to break into the huge cola market, 2000 looked like being another poor year. The company finally accepted that it had made a wrong decision and stopped production in September of that year.
What was the main reason the company decided to launch its new product ranges？
A．It faced increased competition.
B．It wanted to enter new markets.
C．It initiated a policy of expansion.
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