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【单选题】
光标的一般使用步骤,以下正确的是( )A.
声明光标 使用光标 打开光标 关闭光标
B.
打开光标 声明光标 使用光标 关闭光标
C.
声明光标 打开光标 选择光标 关闭光标
D.
声明光标 打开光标 使用光标 关闭光标
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反馈参考答案：
举一反三
【单选题】将燃着的 H 2 S 气体通入盛有一定量 O 2 的集气瓶内,可能发生以下反应 1 2H 2 S+3O 2 →S+2H 2 O 2 2H 2 S+SO 2 →3s+2H 2 O 3 2H 2 S+3O 2 →2SO 2 +2H 2 O 则上述三个反应的先后顺序是
A.
①③②
B.
③②①
C.
①②③
D.
③①②
【单选题】—What could I get my father for Father’s Day? — _____getting him a tie?
A.
Why not
B.
How about
C.
Why don't’ you
D.
Why about
【多选题】关于生成树中桥优先级的配置,以下说法正确的有
A.
桥的优先级共16位，取值范围为0-65535
B.
如果交换机没有配置桥的优先级，则默认取值为32768
C.
桥优先级的取值步长为4096
D.
优先级取值越小表明该桥的优先级越低
【单选题】3月300名大学生在华盛顿抗议削减学生贷款基金的提案。另外有35万大学生在3月期间涌向佛罗里达的阳光海滩度“春假”。因为在佛罗里达晒太阳的人数要多一些，所以他们比在华盛顿抗议的学生更能代表当今的学生，因此国会无需注意抗议学生的呼吁。上面的论证进行了下面哪个假定?
A.
在佛罗里达度假的学生不反对国会削减学生贷款基金提案。
B.
在佛罗里达度假的学生在削减学生贷款基金提议问题上与大多数美国公民意见一致。
C.
在华盛顿抗议的学生比在佛罗里达度假的学生更关心其学业。
D.
既没去华盛顿抗议也没有去佛罗里达度假的学生对政府的教育政策漠不关心。
E.
影响议会关于某政治问题的观点的最好方法是华盛顿与其选举出来的代表交流。
【单选题】光合作用过程中物质的转变途径，错误的是 [ ]
A.
氧原子：H 2 O→ O 2
B.
氢原子：H 2 O→ H 2 → C 6 H 12 O 6
C.
碳原子：CO 2 → C 3 化合物→ C 6 H 12 O 6
D.
氧原子：CO 2 → C 3 化合物→ C 6 H 12 O 6 +H 2 O
【单选题】听力原文：W: It was such a heavy fog day yesterday and today it's such a fine day. Why don't we climb the mountain? M: Oh, I would love to, Susan, but I have been sick for a few days and all that exercise ...
A.
He wouldn't go because he didn't feel well.
B.
He wouldn't go because he didn't like Susan.
C.
He would go because that exercise might do him good.
D.
He would go though he was sick.
【单选题】听力原文：W: It was such a heavy fog day yesterday and today it's such a fine day. Why don't we climb the mountain? M: Oh, I would love to, Susan, but I have been sick for a few days and all that exercise ...
A.
He wouldn't go because he didn't feel well.
B.
He wouldn't go because he didn't like Susan.
C.
He would go because that exercise might do him good.
D.
He would go though he was sick.
【单选题】——Why, this is nothing but common vegetable soup! ——, madam. It’s our soup of the day.
A.
Let me see
B.
So it is
C.
Don’t mention it
D.
Neither do I
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