[单项选择]How was the weight used


A. To check the accuracy of scales.
B. To calculate the density of other metals.
C. To observe changes in the atmosphere.
D. To measure amounts of rainfall.

[单项选择]How was the weight used


A. To check the accuracy of scales.
B. To calculate the density of other metals.
C. To observe changes in the atmosphere.
D. To measure amounts of rainfall.

[单项选择]How were the pipes used in Hawaii


A. To transport water to higher elevations.
B. To provide air-conditioning.
C. To bring nutrients to the soil.
D. To adjust the soil temperatur

[单项选择]How many different creatures are used when preparing roasted camel


A. One.
B. Two.
C. Three.
D. Four.

[单项选择]How much weight can one lose in two weeks on the Scarsdale diet


A. Five pounds.
B. Ten pounds.
C. Twenty pounds.
D. Forty pounds.

[单项选择]

Prices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The price system of the United States is a very complex network composed of the prices of all the products bought and sold in the economy as well as those of a myriad of services, including labor, professional, transportation, and public-utility services. The interrelationships of all these prices make up the "system" of prices. The price of any particular product or service is linked to a broad, complicated system of prices in which everything seems to depend more or less upon everything else.
If one were to ask a group of randomly selected individuals to define "price", many would reply that price is an amount of money paid by the buyer to the seller of a product or service or, in other words, that price is the money value of a product or service as agreed upon in a market transaction. This defini
A. Instructions that come with a product.
B. The quantity of a product.
C. The quality of a product.
D. Warranties that over a product.

[单项选择]How many types of motors are generally used in the shaver


A. Two.
B. Three.
C. Four.
D. Not known.

[单项选择]The study of how sounds are put together and used to convey meaning in communication is______.


A. morphology
B. general linguistics
C. phonology
D. semantics