单项选择题

砂的内部不但含水饱和，其表面还被一层水膜覆裹，颗粒间被水所充盈的状态称为()

A.全干状态
B.气干状态
C.湿润状态
D.饱和面干状态

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What is the essential element that bankers were practically outcasts 400 years ago?
A．Christians could not legally charge interest to other Christians.
B．William Shakespeare's Shylock in The Merchant of Venice is a Jew.
C．The price of banking in the early 1600s was ostracism.
D．It was difficult to go from ghettos to Goldman.

A.Christians
B.
B．William
C.
C．The
D.
D．It
E.

Which of the following is definitely true according to the text?
A．Biologically engineered foods are safe for human consumption.
B．Genetically combining different plant species results in new developments, both good and bad.
C．Genetically engineering foods are capable of unleashing destructive diseases on the environment.
D．Science can execute the task of bio-engineering foods, but not fully evaluate its results at the present time.

A.Biologically
B.
B．Genetically
C.
C．Genetically
D.
D．Science
E.