They had to write their ID Numbers, pick a language, and click their way through the computerised test: a, b, or C. True or False. Yes or No.
他们需要填写自己的证件号码，选择一种语言，在整个电脑考试中不停地点击：A、B或C，对还是错，是或不是。
Logical filters perform tests on the variables and provide a true or false result based on the test.
Logical过滤器将对变量执行测试并根据测试提供true或false结果。
It defines a test conditional, a true expression, and an optional false expression.
它定义一个测试条件，一个true表达式，以及一个可选的false表达式。
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