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【简答题】
每空填多词。写在纸上,拍照提交。提交后可见全文。 音频重复三遍,第一遍 无停顿或 停顿信号 音 ,第二遍有停顿信号音,自行停顿,第三遍无停顿或 停顿信号音。 音频可以反复听,直到你再无修改为止。 The disruption is felt most keenly by pupils in the final year of secondary school. That is the year 1___________________ the gaokao , the notoriously hard university-entrance exam. Many parents fret that online learning is 2___________________ . Hou Kaixuan, who will sit the gaokao in the northern city of Zhangjiakou this summer, 3___________________ . “I’m 4___________________ ,” he says. Not all his classmates agree. Kaixuan observes that 5___________________ , and take perverse pleasure in the fact that 6___________________ . ( 7___________________ in the last year of secondary school. The emphasis is on revision.) When schools and universities eventually re-open, classrooms may be different, says Mr Yue, the teacher in Beijing. The teacher-student relationship will become “less hierarchical”, he predicts. That is because China’s prolonged experiment with online learning is 8___________________ . Teachers who were previously reluctant to give out their contact details on WeChat, a messaging app, 9___________________ . At Mr Yue’s school, students may even call their teachers to ask for feedback. If he is right, such a breaking-down of barriers 10___________________ of the epidemic.
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参考答案:
举一反三
【单选题】带头结点的单链表head为空的判断条件是( )
A.
head=NULL
B.
head—>next=NULL
C.
head—>next=head
D.
head!=NULL
【单选题】提取苷类成分时,为抑制或破坏酶常加入一定量的
A.
硫酸
B.
酒石酸
C.
碳酸钙
D.
氢氧化钠
E.
碳酸钠
【简答题】删除*(head->next)的操作是()。 (A)p=head->next;head->next=head->next->next;deletep; (B)head->next=head->next->next;p=head->next;deletep; (C)p=head;head=head->next;deletep; (D)head=head->next;p=head;deletep;
【单选题】不带头结点的单链表head为空的判定条件是
A.
head=NULL
B.
head→next=NULL
C.
head→next=head
D.
head!=NULL
【单选题】提取苷类成分时,为抑制或破坏酶常加入一定量的
A.
硫酸
B.
酒石酸
C.
碳酸钙
D.
氢氧化钠
【单选题】带头结点的单链表head为空的判定条件是(    )。
A.
head=NULL    
B.
head->next=NULL
C.
head->next=head
D.
head!=NULL
【单选题】提取苷类成分时,为抑制或破坏酶常加入一定量的
A.
硫酸
B.
碳酸钙
C.
氢氧化钠
D.
碳酸钠
【简答题】在*hear之前插入节点*s的操作是: (A)s->next=head;head=s; (B)s->next=head->next;head->next=s; (C)head=s;s->next=head; (D)head->next=s;s->next=head->next;
【单选题】带头结点的单链表 head 为空的判定条件是( )。 A. head = = NULL; B. head->next = = NULL; C. head->next = = head; D. head! = NULL;
A.
head = = NULL;
B.
head->next = = NULL;
C.
head->next = = head;
D.
head! = NULL;
【简答题】提取苷类成分时,为抑制或破坏酶常加入一定量的
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