[单项选择]It is an irrevocable( )which can not be changed．
A. letter of credit
B. bill of lading
C. quarantine
D. quality

[单项选择]It is an irrevocable letter of credit which can not ( ).
A. change
B. be changed
C. changing
D. changed

[单项选择]The irrevocable L/C can（ ）.
A. be amended or canceled without notice to the beneficiary
B. be amended or canceled if the buyer notifies the seller
C. neither be amended nor canceled without agreement of all parties
D. be amended but not be canceled by an applicant

[单项选择]No one can avoid （） by advertisements which can be seen everywhere.
A. to be influenced
B. being influenced
C. influencing
D. having influenced

[填空题]The substances which can give athletes an extra and illegal advantage are ______ in the Olympic Games.

[填空题]Meeting is a general word which can mean any kind of gathering of people.

[填空题]People take salt tablets, which can lead a person to become dehydrated, to______.

[简答题]The reassessment, which can be very painful, is also very valuable.

[单项选择]Oil is an important（）material which can be processed into many different products, including plastics.
A. raw
B. bleak
C. flexible
D. fertile

[填空题]Pollutants from cars cause ______ , which can damage buildings and pollute rivers.

[单项选择]The feeling of loneliness which can ______ you when you are in a crowd is very difficult to get rid of.
A. overcome B. defeat C. beat up D. creep over

[填空题]The __________ refers to the pictures which can be sent into our homes indirectly.

[简答题]Irrevocable Documentary Credit

[填空题]A website is a channel through which companies can promote their products and compete ______.

[单项选择]

Humans are unique in the extent to which they can reflect on themselves and others. Humans are able to (1) , to think in abstract terms, to reflect on the future. A meaningless, (2) world is an insecure world. We do not like extensive insecurity. When it (3) to human behavior we infer meaning and (4) to make the behavior understandable.
(5) all this means is that people develop "quasi theories" of human behavior, that is, theories that are not developed in a(an) (6) , scientific manner. When doing so, people believe they know (7) humans do the things they do.
Let’s consider an example. In the United States people have been (8) with the increasing amount of crime for several years. The extent of crime bothers us; we ourselves could be victims. But it (9) bothers us that people behave in such ways. Why can such things happen We develop quasi theories. We (10) conce
A. moreover
B. therefore
C. nevertheless
D. otherwise