[单选题]The price of vegetables varies according to the weather.
A.jump
B.rises
C.falls
D.changes

[单选题]The price of vegetables varies according to the weather.
A.jumps
B.rises
C.falls
D.changes

[单选题]The price of food fluctuates according to the weather.
A.jumps
B.rises
C.falls
D.changes

[不定项选择题]Which of the following is true according to the passage? __________
A.The National Salt Reduction Initiative aims to put pressure on food companies
B.Parents of children don' t care much about the calorie information of fast food
C.Parents will order the food that contains more salt for their children
D.If people eat less salt every day, they will never suffer from heart disease

[单选题]The need for sleep varies__________from person to person.
A.conservatively
B.alternatively
C.considerably
D.influentially

[单选题]The_______is designed according to the morphological and syntactic aspects of a language. A. structural syllabus
B． situational syllabus
A.

B.skill-based syllabus
C.

D.content-based syllabus

[单选题]The _______ is designed according to the morphological and syntactic aspects of a language. A. structural syllabus
B． situational syllabus
A.

B.skill-based syllabus
C.

D.content-based syllabus

[单选题]Once we begin__________ these files according to their content and date, our computer network drive will seem less confusing.
A.organize
B.organized
C.organizing
D.organizes

[单选题]并发执行的三个事务T1、T2和T3，事务T1对数据D1加了共享锁，事务T2、T3分别对数据D2、D3加了排它锁，之后事务T1对数据（ ）;事务T2对数据（请作答此空）。
A.D1、D3加共享锁都失败
B.D1、D3加共享锁都成功
C.D1加共享锁成功，D3加排它锁失败
D.D1加排它锁成功，D3加共享锁失败

[单选题]现有3个同时到达的作业J1、J2和J3，它们的执行时间分别是T1、T2和T3，且T1＜T2＜T3。系统按单道方式运行且采用短作业优先算法，则平均周转时间是______。
A.T1+T2+T3
B.（T1+T2+T3）/3
C.（3T1+2T2+T3）/3
D.（T1+2T2+3T3）/3

[单选题]点的运动由关系式S＝t^43t^3＋2t^28决定（S以m计，t以s计）。则t＝2s时的速度和加速度为（　　）。
A.4m/s，16m/s^2
B.4m/s，12m/s^2
C.4m/s，16m/s^2
D.4m/s，16m/s^2

[不定项选择题]共用题干 Price Planning
A price represents the value of goods or service for both the seller and the buyer.Price planning is the systematic decision made by an organization after regarding all aspects of pricing.
The value of goods or service can involve both tangible and intangible marketing factors.An example of a tangible marketing factor is the cost savings______(46).An example of an intangible marketing factor is a consumer's pride in the ownership of a Lamborghini rather than another brand of automobile.To make a deal,both the buyer and seller must feel that the price of goods or service provides an equitable value.To the buyer,the payment of a price reduces purchasing power______(47).To the seller, receipt of a price is a source of revenue and an important determinant of sales and profit levels.
Many words are substitutes for the term price:admission fee,membership fee,rate,tuition,service charge, donation,rent,salary,interest,retainer,and assessment.No matter what it is called,______(48) monetary and non-monetary charges,discounts,handling and shipping fees,credit charges and other forms of interest,and late-payment penalties.Anon-price exchange would be selling a new iron for 10 books of trading stamps or an airline offering tickets as payment for advertising space and time.Monetary and non-monetary exchange may be combined.This is common with automobiles,______(49).This combination allows a reduction in the monetary price.
From a broader perspective,price is the mechanism for allocating goods and services among potential purchasers and for ensuring competition among sellers in an open market economy.If there is an excess of demand over supply,prices are usually bid up by consumers.If there is an excess of supply over demand,______(50). ______(50)
A.a price contains all the connotation of other terms of purchase
B.obtained by the purchase of a new bottling machine by a soda manufacturer
C.where the consumer gives the seller money plus a trade-in
D.available for other items
E.prices are usually reduced by sellers
F.price means what one pays for what he wants