【单选题】【消耗次数：1】
The thieves _____the waste paper all over the room while they were searching for the diamond ring.
①
spread
②
scratched
③
scattered
④
burned
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相关题目
【单选题】
The thieves ____ the waste paper all over the room while they were searching for the diamond ring.
①
spread
②
scratched
③
scattered
④
burned
【单选题】
____ native to North America, corn has now spread all over the world.
①
In spite of
②
That it is
③
It was
④
Although
【单选题】
_____native to North America, corn has now spread all over the world.
①
In spite of
②
That it is
③
It was
④
Although
【单选题】
The inspector ____ his fingers over the sheet of newspaper. There were some marks on the surface of the paper.
①
turned
②
set
③
held
④
ran
【单选题】
37. 1000 guests were all found ____in the room which only ___800 people.
①
seat；seat
②
hold；hold
③
hold；seat
④
seated；hold
【单选题】
The classroom is quite clean ____ some waste paper on the floor.
①
without
②
besides
③
except
④
except for
【单选题】
The room had a seating ( ) of over 200.
①
capacity
②
capable
③
capacitive
④
capacious
【单选题】
_____the stress of examinations are over, we call all relax.
①
while
②
Even though
③
Now that
④
For
【单选题】
Were it not for the rainny weather, they______ all right.
①
would be
②
may be
③
would have been
④
were
随机题目
【判断题】
设 p: 2+3=5. q: 大熊猫产在中国. r: 复旦大学在广州. 则复合命题公式“(pùqù?r) ? (( ?pú?q) ?r)”的真值为假。
①
正确
②
错误
【判断题】
自然数里，a=2，f (x,y)=x+y，g (x,y)=x·y，F (x,y): x=y。公式“xy(F(f(x,a),y) ?F(f(y,a),x))”的真值为假。
①
正确
②
错误
【多选题】
设函数f: Z?Z, 若x为奇数f (x)=1, 若x为偶数f (x)= x/2，则下面正确的有：
①
f(1) = 1;
②
f({1}) = {1};
③
f({1, 3}) = {1};
④
f({1, 3}) = 1.
【多选题】
个体域为整数集, 公式“x$y(x×y = 1)”翻译成自然语言，下面合适的有
①
“每个整数都有一个倒数.”
②
“对于每个整数, 都能找到另一个整数, 它们相乘结果是1.”
③
“对任意非零整数, 都能找到另一个整数, 使得它们相乘结果等于1.”
④
“对于任意整数 x, 都存在整数 y, 使得 x×y = 1.”
【多选题】
将命题“除非李建是东北人, 否则他一定怕冷”用0 元谓词符号化合适的有：
①
令 F(x): x 是东北人; G(x): x 怕冷; a: 李建. 符号化为?F(a)?G(a)
②
令 F(x): x 是东北人; G(x): x 怕冷; a: 李建. 符号化为 ?G(a)?F(a).
③
令 H(x, y): x 是 y 地方人; G(x): x 怕冷; a: 小王; b: 东北. 则符号化为?H(a, b)?G(a) .
④
令 P: 李建是东北人; Q: 他怕冷. 符号化为P ? Q。