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【判断题】
为文档的标题设置1到9级的大纲级别,可以在大纲视图中进行,数字越大级别越高A.
正确
B.
错误
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举一反三
【单选题】若用 8 位 0 , 1 表示一个二进制数,其中 1 位即最高位为符号位,其余 7 位为数值位。 的原码、反码和补码表示,正确的是( )。
A.
10010010 ， 11101101 ， 11101110
B.
00010010 ， 01101101 ， 01101110
C.
10010010 ， 11101110 ， 11101101
D.
10010010 ， 01101101 ， 01101110
【单选题】When the temperature drops to 0℃, ice ________ on the surface of water. [ ]
A.
has
B.
floats
C.
forms
D.
produces
【简答题】[A]earth [B]grass [C]water [D]ice
【单选题】The detective was greeted with an unpleasant smell of ______ air when he stepped into the long locked room.
A.
stagnant
B.
misty
C.
fragrant
D.
stale
【单选题】Ice is _____ than water because _____.
A.
less dense; frozen water maintains more hydrogen bonds than liquid water
B.
less dense; liquid water maintains more hydrogen bonds than frozen water
C.
denser; frozen water maintains more hydrogen bonds than liquid water
D.
denser; liquid water maintains more hydrogen bonds than frozen water
E.
denser; frozen water cannot hydrogen bond
【单选题】He stepped gingerly into the ramshackle old house.
A.
slowly
B.
recklessly
C.
cautiously
D.
alertly
【单选题】若用8位0,1表示一个二进制数,其中1位即最高位为符号位,其余7位为数值位。 的原码、反码和补码表示,正确的是
A.
10010010，01101101，01101110
B.
10010010，11101101，11101110
C.
10010010，11101110，11101101
D.
00010010，01101101，01101110
【简答题】A water B rain C stone D ice
【单选题】The boy ______ when he said that he ______ the eggs ______ by the hen in the closet before he ______ down to have a rest.
A.
was lying, had laid, laid, lay
B.
had laid, lay, laid, was lying
C.
lay, was lying, lain, lay
D.
laid, lay, lam, lies
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