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【判断题】
具有多道功能的操作系统一定是多用户操作系统。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Don’t you ________ this country’s future? [ ]
A.
care for
B.
care about
C.
take care
D.
worry
【简答题】西方最早的复调音乐是()。
【单选题】— Look at the boy running on the ground, Is it David? — It _____ be him, he has just gone to the teacher's office. [ ]
A.
must
B.
can't
C.
could
D.
may
【简答题】v. to fail to take care of sb/sth; to not give enough attention to sth
【单选题】---David, look at the man in white over there. Can you tell me_____ ?
A.
--He is a doctor.
B.
who is he
C.
who he is
D.
what is he
E.
what he is
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