之所以要对大学生进行思想政治教育，树立爱国主义思想，是因为（

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问题单项选择题

之所以要对大学生进行思想政治教育，树立爱国主义思想，是因为（）

①爱国主义是中 * * 精神的核心

②爱国主义是抽象的，不是具体的

③培养大学生爱国主义精神是新时代的要求

④爱国主义是中 * * 自强不息的精神支柱

A.①②

B.②③

C.①②④

D.①③

答案

参考答案：D

填空题

用所给词的适当形式填空。

1. _____ (luck), our team won the first prize.

2. We _____ (begin) to play hide-and-seek ten minutes ago.

3. Her sister _____ (choose) to give the seat to the seat to an old man on the bus finally.

4. All of us hope _____ (visit) the park soon.

5. His father didn't agree _____ (lend) him the bike.

6. We saw an _____ (amazed) film and all of us liked it.

7. Millie _____ (teach) me to drive two months ago.

8. Believe _____ (you). You are the cleverest student.

9. You'll feel the _____ (beautiful) of the old city if you come here in autumn.

10. Some people_____ (see) an eagle in the sky just now.

选择题

如图9-6-9所示为一弹簧振子做简谐运动的图象，由图可知，t₁和t₂时刻对称，振子在t₁和t₂时刻比较，下列结论正确的是（）

图9-6-9

A．相同的速度

B．相同的位移

C．相同的加速度

D．相同的机械能