题目内容
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Two different bond lengths are observed in the PF5molecule,but only one bond length is observed in SF6. Explain the difference.
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According to Quinn(1987), the main metaphors with which Americans conceptualize MARRIAGE are: MARRIAGE IS A MANUFACTURED PRODUCT e. g. We want to work hard at making our marriage strong. MARRIAGE IS AN ONGOING JOURNEY e. g. We went in a common direction. MARRIAGE IS A DURABLE BOND BETWEEN TWO PEOPLE e. g. They are tied to each other. Find other linguistic expressions which reflect these three metaphors.
A.A. one
B.B. two
C.C. three
D.D. four
Currently， the two women________. 查看材料
A.are married again
B.frequently visit each other
C.live in different places
D.live together
Why did Bond stop in the doorway to theunderwear shop？
A.To see who Was followinghim．
B.To look at the man in thefun suit．
C.To avoid the sunshine．
D.To look at the underwear．
A.and
B.but
C.yet
D.So
There are three different jars of low fat milk, and______.
A．one has more fat than the other two
B．they all cost the same amount of money
C．one has less fat then the others
D．they all have the same amount of fat
Two things are the same size but differently weight. That means______.
A．the heavier one has lower density
B．the lighter one has greater density
C．they have the same density
D．they have different density
从供选择的答案中，选出最确切的解答。
Most computer systems are(1)to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be(2)to an outsider attack by preventing(3)from outside can still be vulnerable to the insider attacks accomplished by abusive usage of(4)users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually(5)by tools referred to as Intrusion Detection Systems.
