题目内容
（请给出正确答案）
A.cat/etc/passwd＞ newfil
B.txt
C.grep login/var/log/messages
D.more /var/log/secure
E.more /etc/passwd
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更多“Tavo wants to check the status…”相关的问题
【B4】______ , in many parts of the world, man has not realized that the 【B5】______ of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large 【B6】______ , only to find that 【B7】______ them he has lost the best friend he had.
Two 【B8】______ years ago a rich and powerful country cut down its trees to build warships 【B9】______ to gain itself an empire. It gained the empire, but without its trees, its soil became hard and poor. When the empire 【B10】______ to pieces, the home country found itself faced by floods and starvation.
【B11】______ a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this ,the villager wants wood to cook his food 【B12】______ ; and he can earn money by making charcoal or selling wood to the townsman. He is usually too lazy or too 【B13】______ to plant and look after new trees. So, 【B14】______ the government has a good system of control, or can educate the people, the forests slowly disappear.
This does not only mean that the villagers' sons and grandsons have 【B15】______ trees. The results are even more serious; for where there are trees their roots break the soil up allowing the rain to sink in and also bind the soil, thus preventing 【B16】______ washed away on the surface, causing floods and carrying 【B17】______ ground away 【B18】______ it the rich top-soil, in which crops grow so well. When all the top-soil is 【B19】______ , nothing remains 【B20】______ worthless desert.
A．with
B．at
C．in
D．through
After she graduated from high school, Mrs. Cox went on to college. Four years later, she received her bachelor's degree (B. A. ) in English and her teaching certificate. Then she was qualified to teach in the secondary schools of her state. In the summers, Mrs. Cox takes more classes. Someday she hopes to get a master's degree (M. A. ). With an M. A. , she will receive a higher salary.
The school day at Mrs. Cox's high school, like that in many high schools in the United States, is divided into six periods of one hour each. Mrs. Cox must teach five of these six periods. During her free period, which for her is from 2 to 3 p.m. , Mrs. Cox must meet with parents, order supplies, make out examinations, check assignments, and take care of many other things. In short, her free period isn't really free at all. Mrs. Cox works steadily from the time she arrives at school in the morning until the time she leaves for home late in the afternoon.
Mrs. Cox wants to be a teacher because______.
A．she likes teaching
B．she is a young girl
C．she has many problems to deal with
D．she doesn't mind what she is doing
A salesman has to be ______ if he wants to succeed.
A．expensive
B．cheap
C．explosive
D．aggressive
A.nloopback check
B.nlinktrace check
C.nconnectivity verificatio
D.nservice consistency check
She wants to know whether the measures have been agreed ______.
A．to
B．with
C．about
D．upon
If a consume wants a quick settlement of his problem, it's better to complain to______.
A．a shop assistant
B．the store manager
C．the manufacturer
D．a public organization
Your hair wants ______. You'd better have it done tomorrow.
A．cut
B．to cut
C．cutting
D．being cut
A.as even he wanted
B.as even he wants
C.as if he wants
D.as if he wanted
______ I can't understand is ______ he wants to change his mind.
A．That, that
B．Which, how
C．What, what
D．What, why
