[单项选择]Under one of the following conditions, goods or services may be procured through competitive negotiation in accordance with this Law: ______.
A. where, qualified tender is lacking，or re-invitation fails
B. where the goods or services in question are special in character and can only be procured from a limited number of suppliers
C. where goods or services can be procured from only one supplier
D. where consistency of the items or compatibility of the services procured requires procurement of additional items or services from the same supplier

[填空题]One ______ is to buy many inexpensive goods and services and a few expensive ones.

[单项选择]Drought conditions in the following countries except （　） are the worst in decades, slowing agricultural output.
A. Syria
B. Israel
C. Jordan
D. Palestine

[单项选择]
Fred, a very conscientious worker, had one serious flaw: he was clumsy. The poor boy spoiled everything he did and for that reason could never keep a job. He’d had many jobs over the years but only for a few weeks at a time. For six months, Fred was out of employment. Finally, he got a job in a warehouse where many different types of home furnishings were stored. Fred’s job was to unpack the merchandise newly arrived from the factory and put each item in its assigned place. The work was only temporary, but after so long with no employment at all it was better than nothing.
One morning Fred unpacked a large and quite fragile vase. He picked it up to carry across the warehouse. But he had only walked two steps and he tripped. There was a loud crash as the vase fell from Fred’s hands and shattered into a thousand pieces.
Fred was called immediately to the manager’s office, and he was sure he would be fired. The young man’s spirits began to
A. What Fred did.
B. Where Fred worked.
C. How clumsy Fred was.
D. How Fred found a steady jo

[单项选择]Which of the following conditions exists when the economic gain to society is maximized（）
A. The sum of consumer and producer surpluses for a good or service is maximized. 
B. The difference between consumer and producer surpluses for a good or service is maximized. 
C. The price and quantity for a good or service is such that consumer and producer surpluses are equal.

[填空题]

The following are the conditions of cancellation and termination of the contract.
1. Both parties should abide by the contract and should refrain from revising, canceling, or terminating the contract without mutual consent.
2. The contract can be revised, canceled, or terminated with mutual consent. Before both parties have reached an agreement, the contract should be strictly observed.
3. Party A has the right to cancel the contract with a written notice to Party B under the following conditions:
(1) Party B does not fulfill the contract or does not fulfill the contract obligations according to the terms stipulated, and has failed to amend after Party A has pointed it out.
(2) According to the doctor’s diagnosis, Party B cannot resume normal work after a continued 30 days sick leave.
4. Party B has the right to cancel the contract with a written notice to Party A under the following conditions:
(1) Party A has