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7时45分+36分=______时______分． 9时16分+3时57分=______时______分． 13时-8时32分=______时______分． 10时21分-6时36分=______时______分．
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举一反三
【简答题】简述种子制备的方法。
【单选题】国家介入市场、调控宏观经济运行的行为必须有法律的明确授权,并受宏观调控法实体性、程序性规范的约束。这是宏观调控法若干原则中( )的涵义。
A.
调控绩效原则
B.
调控法定原则
C.
调控适度原则
D.
调控公平原则
【简答题】Bright colours on a pae make a big impact, so it seems that a lot of good studying is going on when you read and highlight.
【单选题】听力原文：W: Good evening, sir. I'm the Assistant Manager. M: How nice. W: Yes, I'm afraid we've had a complaint about the noise from your neighbor across the corridor. He's trying to get some sleep as he ...
A.
She wants to greet the man.
B.
She wants to send the man some coffee.
C.
She wants to inform. the guest of a complaint from his neighbor.
D.
She wants to join their celebration.
【简答题】简述一种制备无亚硝酸根离子水的方法。
【单选题】听力原文：W: Good evening, Sir. Are you ready to order now? M: No, I just finished. I am waiting for my change. What does the man want?
A.
His money.
B.
A different waitress.
C.
A menu.
D.
He wants to order some food.
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