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【简答题】
阅读下列短文,根据短文内容,从短文后的选项中选出适当的选项补全短文。 'We're reading the first part of a book that doesn't end…' 1______ But I have always liked them because they always remind us that the future can be anything we want to make it. We can make it anything that we can imagine. 2______ If we plant good seeds (种子), we have good products. If our seeds aren't good, we get useless products. 3______. I want the future to be better than the past. 4______ We all should care about the future, because that's where we will spend the rest of our lives. The past is gone. 5______ The future is before us. It is changeable. Everything we do will affect it. Each day brings with it something new in our homes and in our business, but only if we realize them. We're just at the beginning of everything we study. A. We are all like farmers. B. I don't know who wrote these words. C. There is nothing we can do to change it. D. If we plant nothing at all, we get nothing at all. E. I don't want it filled with mistakes that happened many times before.
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参考答案:
举一反三
【判断题】汽油机点火系的技术状况对燃烧过程有很大影响,因而影响汽车的燃料经济性。
A.
正确
B.
错误
【判断题】网络利用率越高越好,这种说法是
A.
正确
B.
错误
【单选题】根据分子大小不同而进行分离的方法是:
A.
分配色谱
B.
离子交换色谱
C.
大孔树脂色谱
D.
吸附色谱
E.
凝胶过滤色谱
【多选题】下列蛋白质分离纯化的方法中,根据分子大小不同而进行分离纯化的是:
A.
透析
B.
超滤
C.
凝胶过滤层析
D.
亲和层析
E.
盐析法
【判断题】果胶在碱性溶液中比较稳定。
A.
正确
B.
错误
【判断题】两个初等矩阵的乘积还是初等矩阵。
A.
正确
B.
错误
【简答题】维持蛋自质一级结构的共价键有____键和____键。
【简答题】自动控制系统的控制方式有哪些
【单选题】单块结构嵌入式操作系统优点( )
A.
模块化程度高
B.
结构清晰
C.
易于调试
D.
规模较小时比较灵活
【单选题】通过锻炼使人----的方法,称之为《易筋经》。
A.
强身健体
B.
锻炼身体
C.
强健筋骨
D.
机体强健
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