结晶分异作用晚期形成的岩浆矿床具典型的海绵陨铁结构。()
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矿液与围岩进行物质交换所形成的矿体是交代矿体。()
We learn from this text that many corporate executives feel that______.
A. technological advances are essential to today"s economic system
B. technology has actually led to a decline in their quality of life
C. longer hours are making their workers more impatient and uncivil
D. technology can be blamed for many of today"s social problems
对于系统模型中相同的模块，Simlink会对其进行自动编号。()
According to the author, language discrimination lawsuits are______.
A. widespread in today"s workplace
B. a surprise to most companies involved
C. growing in number
D. indicative of the need to develop stronger laws
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