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【单选题】
下列的空间复杂度是( )。 void fat(int K) { int a[n]; int i; for(i=0;iA.
O(1)
B.
O(n)
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【简答题】思君令人老，岁月忽已晚。“晚”在句中是什么意思？
【单选题】Q: What can we infer from this conversation?
A.
Germany is embarrassed by UK’s info security.
B.
Huawei is more popular than Apple in the west.
C.
Huawei is doing business secretly with Germany and UK.
D.
The United States is actually spying every country using its technology.
【简答题】下表是元素周期表的一部分。表中所列的字母分别代表某一种化学元素。 (1)Y分别与D、E形成的化合物中熔点较高是_____________ （用具体物质的化学式表示）。 (2) LY 4 分子的电子式是_______________。 (3)由J、L、R三种元素形成的某种配位化合物，常温下该化合物具有挥发性，化学式为J(LR) 4 ，其中J的化合价是0价。J(LR)4固态时属于____（填晶体类型）...
【单选题】What can we infer from Paragraph 2?
A.
People with high-I. Q. will not look down upon those with low-I. Q.
B.
People with low-I. Q. will not look down upon those with high-I. Q.
C.
People of different I. Q. group, either high or low, will scorn others.
D.
Highbrows will never be looked down upon.
【单选题】听力原文：Q: What can we infer from the conversation? (11)
A.
Someone broke into the woman's house and stole some jewels.
B.
She knew how the burglars broke into her house.
C.
She didn't know what were stolen.
D.
Policemen would arrive next day.
【单选题】下列叙述正确的是
A.
NaHSO 4 、Na 2 O 2 晶体中的阴、阳离子个数比均为1∶2
B.
离子化合物中一定不含共价键
C.
某主族元素的最高价含氧酸为H n RO m ，则其气态氢化物一般是H 8-2 m +n R或RH 8-2 m +n
D.
元素周期表中L层电子为奇数的元素的化合价也都是奇数
【单选题】On the other hand, their rarity clearly makes them popular on social media sites. Deep-sea species may potentially become illegally obtained specimens or food. Humans may end up eating these animals o...
A.
Confirming their identity is very urgent for protection.
B.
Most of them are becoming illegally obtained specimens.
C.
Adorable ones are more likely to be posted on social media sites.
D.
。。。
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