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【单选题】
You are____ to ask the teacher for permission if you want to leave the classroom.A.
suspected
B.
respected
C.
thought
D.
supposed
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【单选题】关于C语言的数据类型,以下错误的说法是________。
A.
若要准确、无误差地表示自然数,应使用整数类型
B.
若要保存带有多位小数的数据,应使用双精度类型
C.
修饰词signed、unsigned、long、short等只能用于整型和字符型数据类型
D.
若只处理“真”和“假”两种逻辑值,应使用逻辑类型
【简答题】IP数据报必须考虑最大传送单元MTU(Maximum Transfer Unit)。这是指哪一层的最大传送单元包括不包括首部或尾部等开销在内
【单选题】When lunch was ready the waiter ______ to let people know.
A.
rang the bell
B.
wrote down on the blackboard
C.
cried and shouted
【单选题】They _____________when the waiter_______ for their order.
A.
were talking;asked
B.
talked;ask
【单选题】When the waiter saw the man in rags coming into the restaurant, he looked down upon him but had to offer some service to him. [ ]
A.
unwilling
B.
willing
C.
wonderful
D.
excellent
【单选题】when she left the restaurant, she ___the waiter two dollars.
A.
taped
B.
used
C.
tipped
D.
topped
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