Decide whether each of the following words is a simple word, a derivative word or a compound word friendship

A.simple word

B.derivative word

C.compound word

cluded that for each 100-point increase in the average sat score, a graduate could expect a 3% to 7% increase in lifetime earnings. 译文： 大多数调查的结论是，sat的平均成绩每高出100分，大学毕业生一年的收入便会增加3%到7%。 ()

on the information in the text. Write T for True and F for False in the black before each statement.2. （） People don’t believe what advertisements say about language learning at all.

高收入群体和低收入群体是两个独立的决策主体，各自决定是否接受这个环保项目，并根据效用最大化原则做出有利于自身的最优决策。（)

A.The high-income and low-income groups are two separate decision-makers. They decide whether they will accept the environmental protection project on their own and make optimum decisions for themselves according to the principle of maximum utility.

B.The high-income group and the low-income group are two independent decision-makers. They decide whether to accept the environmental protection project or not, and make the best decision for themselves according to the principle of maximum utility.

C.High-income groups and low-income groups are two independent decision-making bodies, each of which decides whether to accept this environmental protection project and make optimal decisions that are beneficial to themselves according to the principle of utility maximization.

D. The high-income group and the low-income group are two independent decision-making subjects. They decide whether to accept this environmental protection project or not and make the best decision for themselves according to the principle of utility maximization.

出选择。支付矩阵如下

(1)是否存在纯策略的纳什均衡？如果存在，请指出。

(2)如果两厂商都采用极大化极小策略，结果会怎样？

(3)如果厂商1采用极大化极小策略，厂商2得知后，它会怎样做？

Two competing firms are each planning to introduce a new product. Each firm will decide whether to produce Product A, Product B, or Product C. They will make their choices at the same time. The resulting payoffs are shown below.

We are given the following payoff matrix，which describes a product introduction game:

a, Are there any Nash equilateral in pure strategies？ If so, what are they？

b. If both firms use maximin strategies, what outcome will result？

c. If Firm 1 uses a maximin strategy，and Firm 2 knows, what will Firm 2 do？

听力原文：Man: We offer a very personalized service to the different divisions. Some of the staff are dedicated to groups of individuals within these divisions. That way we get to know what sort of service they are looking for and how much help they need from us over conference organization or brochures or whatever. What we do insist on, whether it’s leaflets or posters or local information, is quality. You will hear another five recordings. For each recording, decide what the speaker is talking about. Write one letter （） next to the number of the recording. Do not use any letter more than once. You will hear the five recordings twice. A reception B research and development C shop floor D payroll E human resources F information technology G publicity H canteen

The party who must decide whether to exercise the option is termed the option ___.

A.customer

B.buyer

C.dealer

D.seller

She couldn’t decide whether to stay or ___for Nanjing at once。

A. left

B. will leave

C. leaving

D. to leave