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●Hi, Carolyn: It’s been a bad time for my husband and me. I haven’t been able to get pregnant since a miscarriage about a year ago, and many people around me have had babies or are getting pregnant. 71 I have been looking for another job for months and have been on more interviews than I ever thought I would get. But I still don’t have a new position. 72 I know everyone has ups and downs, but I feel like I’ve been down so long, with nothing changing. How do you continue feeling hopeful when so many things go wrong? I’ve seen a doctor. She did help, but it still hurts when another friend is pregnant or wait another week with no job offer.            —Feeling Down ●Dear, Feeling down: It will hurt, yes. And if you’ve lost hope, then analyzing the depression is a must. It’s so personal that it’s hard to make suggestions, but what are you reliably good at, what gives you great pleasure, and what puts smiles on your face? 73 For many it’s just getting to the other side, knowing you have a favorite book or the person you love waiting for you at the end of the day. Personally, being a mom also comes with difficult lows, since all kids struggle with the world and with their parents. It’s their job. While you say “so many things go wrong,” I actually count two in your letter—losing your baby and your job. 74 But you do have your general health, your talents, your marriage, your friends, your family, and other abilities and interests to move you forward. 75 —Carolyn A. I don’t mean to minimize either; they’re life’s challenges, and you’re facing both. B. I’m beginning to feel like I can’t have things go right. C. Would you be so kind as to help me with my problems? D. My job is probably not going to last beyond spring. E. Whenever you need them, they are proof of your strength. F. For some people it’s exercise; for some it’s giving their time to a goal. G. Take a deep breath and just take it easy.
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【多选题】电流源电路在放大电路中的主要作用是( )。
A.
作为能量提供者,提供电路工作所需能量
B.
作偏置电路,提供合适静态电流
C.
作有源负载,提高电压放大倍数
D.
作信号源,控制电路实现放大
【多选题】在放大电路中,电流源的主要作用是( )。
A.
作有源负载
B.
作信号源
C.
能量提供者
D.
作偏置电路
【判断题】镍氢电池工作电压为1.2V,截止电压一般设定在0.9~1.V
A.
正确
B.
错误
【单选题】在模拟集成放大电路中,电流源的主要作用是()。
A.
信号源和补偿电路
B.
有源负载和偏置电路
C.
有源负载和补偿电路
D.
信号源和偏置电路
【简答题】在集成放大电路中,电流源的主要作用是 和 。
【单选题】The Industrial Revolution witnessed the extensive use of theoretical knowledge in practice.
A.
Y
B.
N
C.
NG
【判断题】竖直约束强制使两条直线或多段线线段的夹角保持 90 度。
A.
正确
B.
错误
【单选题】The use of drills and pattern practice is a distinctive feature of _______.
A.
the Communicative Approach
B.
the Grammar-Translation Method
C.
the Direct Method
D.
the Audiolingual Method
【简答题】Every week, Xiao Ying plans to use 180 minutes to practice her listening. According to the table, it takes her  ______  hour(s) to do it on weekdays. [     ]
【多选题】在放大电路中,电流源的主要作用是
A.
作有源负载
B.
信号源
C.
能量提供者
D.
作偏置电路
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