目前比较流行的硬件描述语言主要有Verilog HDL和VHDL。

单项选择题A stereotype is A、a particular definitive description of a culture. B、invariant across all cultures. C、a perception about a particular group. D、not culturally based.

单项选择题5. One of the basic principles of the Communicative Language Teaching is the introduction of ______ texts into learning situations. A、authentic B、virtual C、intensive D、extensive