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【单选题】
In this part of the quiz, indicate the main function of the term or phrase that is in boldface in the following passage. More than one letter might be acceptable, but y ou must choose only one option as the best. From and advertisement for Equal Exchange Coffee (1997): It may be a little early in the morning to bring this up, but if you buy coffee from large corporations, you are inadvertently maintaining the system which keeps small farmers poor while lining the pockets of rich corporations. By choosing Equal Exchange coffee, you can help to make a change. We believe in trading directly with small farming cooperatives at mutually agreed-upon prices with a fixed minimum rate. Then, should the coffee market decline, the farmers are still guaranteed a fair price. So have a cup of Equal Exchange Coffee and make a small farmer happy . Of course, your decision to buy Equal Exchange need not be completely altruistic. For we take as much pride in refining the taste of our gourmet coffees as we do in helping the farmers who produce them....A.
P = a premise marker
B.
C = a conclusion marker
C.
A = an assuring term
D.
G = a guarding term
E.
D = a discounting term
F.
E+ = a positive evaluative term
G.
E- = a negative evaluative term
H.
N = none of the above
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举一反三
【判断题】Roles within the buying center are socially constructed, which means people define how they will act in the business-to-business purchase process and how they will interact with others.
A.
正确
B.
错误
【单选题】The government reversed its decision to build nuclear reactors; now they will not be constructed.
A.
made
B.
stuck to
C.
ratified
D.
gave up
【简答题】The carpet on the floor was stained and torn, the windows nearly __________ with dirt, and the walls looked as if they had never been repainted since the place was constructed.
【简答题】（本小题满分12分）在直角坐标系xOy中，曲线C 1 的点均在C 2 ：（x-5） 2 ＋y 2 =9外，且对C 1 上任意一点M，M到直线x=﹣2的距离等于该点与圆C 2 上点的距离的最小值. （1）求曲线C 1 的方程； （2）设P(x 0 ,y 0 )（y 0 ≠±3）为圆C 2 外一点，过P作圆C 2 的两条切线，分别与曲线C 1 相交于 点A，B和C，D.证明：当P在直线x=﹣4上运动时...
【简答题】已知定点A（﹣3，0），MN分别为x轴、y轴上的动点（M、N不重合），且AN⊥MN，点P在直线MN上， ． （1）求动点P的轨迹C的方程； （2）设点Q是曲线x 2 +y 2 ﹣8x+15=0上任一点，试探究在轨迹C上是否存在点T？使得点T到点Q的距离最小，若存在，求出该最小距离和点T的坐标，若不存在，说明理由．
【简答题】在直角坐标系xOy中，曲线C 1 的点均在C 2 ：（x-5） 2 +y 2 =9外，且对C 1 上任意一点M，M到直线x=-2的距离等于该点与圆C 2 上点的距离的最小值。 （1）求曲线C 1 的方程； （2）设P（x 0 ，y 0 ）（y 0 ≠±3）为圆C 2 外一点，过P作圆C 2 的两条切线，分别与曲线C 1 相交于点A，B和C，D，证明：当P在直线x=-4上运动时，四点A，B，C，D的...
【简答题】在直角坐标系xOy中，曲线C 1 的点均在C 2 ：（x-5） 2 ＋y 2 =9外，且对C 1 上任意一点M，M到直线x=﹣2的距离等于该点与圆C 2 上点的距离的最小值. （Ⅰ）求曲线C 1 的方程； (1-4班做)（Ⅱ）设P(x 0 ,y 0 )（y 0 ≠±3）为圆C 2 外一点，过P作圆C 2 的两条切线，分别与曲线C 1 相交于点A，B和C，D.证明：当P在直线x=﹣4上运动时，四点A...
【简答题】已知动点P的轨迹为曲线C，且动点P到两个定点F 1 （-1，0），F 2 （1，0）的距离 | P F 1 |，| P F 2 | 的等差中项为 2 ． （1）求曲线C的方程； （2）直线l过圆x 2 +y 2 +4y=0的圆心Q与曲线C交于M，N两点，且 ON ? OM =0(O 为坐标原点），求直线l的方程； （3）设点 A(1， 1 2 ) ，点P为曲线C上任意一点，求 | PA |+ 2 ...
【简答题】某同学利用如图 5 - 3 - 15 甲所示装置做 “ 研究平抛运动 ” 的实验,根据实验结果在坐标纸上描出了小球水平抛出后的运动轨迹,但不慎将画有轨迹图线的坐标纸丢失了一部分,剩余部分如图乙所示.图乙中水平方向与竖直方向每小格的长度均代表 0.10 m , P 1 、 P 2 和 P 3 是轨迹图线上的 3 个点, P 1 和 P 2 、 P 2 和 P 3 之间的水平距离相等.完成下列填空: ...
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