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【单选题】
Why is liberal education crucial in the nation's economic life?A.
It helps to produce more entrepreneurs in stead of more engineers.
B.
It helps people form. a habit of mind that enables them to innovate.
C.
It enables people get connected with each other in economic life.
D.
It leads to the creation of wealth and jobs in the society directly.
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【简答题】The idea of dressing () came about because of the weather.
【简答题】It must have been about two o’clock in the morning when I was woken abruptly by a loud banging noise. It was such a bitterly cold night that I did not fancy the idea of getting up, so I sat in bed li...
【单选题】多轴飞行器在风中悬停时下列影响正确的是
A.
, 与无风悬停相比，逆风悬停机头稍低，且逆风速越大，机头越低
B.
一般情况下，多轴飞行器应尽量在顺风中悬停,
C.
侧风的作用将使多轴飞行器沿风的去向位移、因此、侧风悬停时应向风的反方向压杆
【单选题】下列4组实验中的操作均能达到实验目的的是 选项 实验目的 操作1 操作2
A.
除去氮气中少量的氧气 通过灼热炭粉 通过灼热铜丝网
B.
区分软水和硬水 加入肥皂水 过滤
C.
区分氯化钙和碳酸钙固体 加水 加稀盐酸
D.
区分黄铜（铜锌合金）和黄金 观察颜色 加稀盐酸
【单选题】Paragraph 2 People act the way they are dressed. Those wearing beach clothes often put their feet on the desk, slouch in their chair, and look lazy. Those who look professional and businesslike work b...
A.
People who wear beach clothes to work are lazy.
B.
Dressing nice will help you get a better job.
C.
People act the way they are dressed.
D.
Men should always wear ties to work.
【单选题】下列4组实验中的操作均能达到实验目的是（ ） 选项 实验目的 操作1 操作2 A 除去氮气中少量的氧气 通过灼热炭粉 通过灼热铜丝网 B 区分软水和硬水 加入肥皂水 过滤 C 区分氯化钙和碳酸钙固体 加水 加稀盐酸 D 区分黄铜（铜锌合金）和黄金 观察颜色 加稀盐酸
A.
A
B.
B
C.
C
D.
D
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