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【单选题】
把十进制数39.875D分别转换为二进制数和十六进制数,下列结果正确的是:A.
二进制数为100111.111，十六进制数为27.7。
B.
二进制数为100011.111，十六进制数为23.7。
C.
二进制数为100111.111，十六进制数为27.E。
D.
二进制数为100011.111，十六进制数为23.E。
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【单选题】The is one of the necessary instruments in the North Pole exploration.
A.
compass
B.
passage
C.
message
D.
progress
【单选题】对国家而言,制度建设是一项浩大的系统工程,不可能一蹴而就;要建立全面、完善的社会经济管理制度,往往任重道远。这说明 ()
A.
在社会历史领域，新事物会得到人民群众的支持
B.
事物发展的前途是光明的
C.
新事物发展的道路是曲折的
D.
新事物战胜旧事物可以一蹴而就
【单选题】North Pole Explorations If Santa Clans really does reside at the North Pole, he must live a lonely life. The North Pole isn't what most of us would consider a hospitable place as the average winter te...
A.
it delivers an undisturbed home for many animals
B.
most creatures cannot adapt to its environment
C.
only Santa Claus likes living there with his reindeer
D.
only a few kinds of creatures can't bear its coldness
【简答题】When the North Pole is tilted away from the sun,
【单选题】________you never plan to visit the polar bears in the North Pole or the penguins in the South Pole，now it is the proper time to start thinking about that.
A.
Until
B.
Unless
C.
As long as
D.
Even if
【单选题】What is a reason WHY there is no ice in the ponds near North Pole?
A.
The ice was used to make ice sculptures.
B.
Ice carvers from around the world came to North Pole.
C.
Snowfall kept ice from forming on the ponds.
D.
North Pole cancelled its ice sculpture park.
【简答题】According to the passage, the best time to go for the North Pole exploration is ______.
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