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【单选题】
一质点作振动,周期为 T ,质点由平衡位置到二分之一最大位移处所需要的时间为A.
T /12
B.
T /2
C.
T /4
D.
T /8
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举一反三
【简答题】Unit 1 Listening A: I Need to Change My Unhealthy Life. Jennifer (J): You look _____1______worried. What's wrong with you? Michael (M): Well, the doctor said I needed to change my____2_____ life. It m...
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【单选题】你准备进行一次演讲，演讲的表现将决定你会得到晋升还是陷入麻烦。你非常紧张。这时，你会（）
A.
喝上一杯，仅一杯，以稍稍放松一下。
B.
喝一杯可乐，使自己保持警醒。
C.
告诉大家你很紧张。
D.
告诉自己“已充分准备，非常自信”
【简答题】Jennifer: Hi, Michael! You look (______ ) (1. 有点)worried. What’s wrong with you? Michael: Well, the doctor said I needed to change my (_______)(2. 不健康的) life. It made me too fat. But I have(______ ) ...
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【简答题】Listen to the material and fill in the blanks. Jennifer: Hi, Michael! You look a little __1__ worried. What's wrong with you? Michael: Well, the doctor said I needed to change my ____2____ life. It ma...
【简答题】你准备进行一次演讲，演讲的表现将决定你会得到晋升还是陷入麻烦。你非常紧张。这时，你会：() A喝上一杯，仅一杯，以稍稍放松一下。 B喝一杯可乐，使自己保持警醒。 C告诉大家你很紧张。 D告诉自己“已充分准备，非常自信”。
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