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【单选题】It is called softwood, but these days it is producing nothing but hard feelings. Softwood is used to build houses stuff that in skilled hands changes from a pile of wood into a recognizable home in me...
A.
Demand for wooden house will fall.
B.
Customers will have to pay high prices.
C.
Canada will place higher tax on lumber industry.
D.
The U.S. will negotiate the matter sincerely.
【单选题】A little girl was given so many picture books on her seventh birthday that her father thought his daughter should give one or two of her new books to a little neighbor boy named Robert. Now, taking bo...
A.
the father went out to work
B.
the father made his own decision
C.
the father left his daughter alone
D.
the father did what he wanted
【单选题】在某计算机中采用了多级存储体系，设计有cache，主存和磁盘。假设访问cache一个字需要花费10ns，若该字不在cache中但是存在在主存中，那么需要100ns载入cache，然后重新开始定位。若该字既不在cache中，也不在主存中，那么需要10ms的时间装入主存，再用100ns复制到cache，再开始定位。设cache的命中率为0.90，主存的命中率为0.75，那么，该系统访问一个字的平均时间...
A.
25000ns
B.
250023ns
C.
250017ns
D.
250020ns
【单选题】The plane found the spot and hovered close enough to （） that it was a car.
A.
ensure
B.
examine
C.
verify
D.
testify