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【简答题】
My experience of extreme saving I’ve never been very good with money and last year I did something I’ve never done before — I saved up for ten whole months. My friends were planning a trip abroad to celebrate their graduation and I didn’t want to be left at home! Trips abroad are expensive though, so I had to work hard and stick to a really strict budget. The first thing I did was to stop spending money on eating (and drinking) out. I estimated that I was spending about $20 every week on takeout coffee and sandwiches — that had to stop! I became organized and got up early every morning to prepare snacks and drinks to take with me to college. Another important thing I did was to start looking after loose change. It all went into a piggy bank and I must admit that I was really surprised by how quickly the cents turned into dollars. The hardest thing was cutting down on buying new clothes. I thought that new jeans, shoes and tops were my main expenses and I was able to set aside so much money by just avoiding the shops. I didn’t enjoy that part of the saving up experience, but it was worth it because by the end of the year I’d saved enough to go to Mexico with my friends!
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参考答案:
举一反三
【单选题】trace(1+4); trace(8-3); trace(-5); trace(2*5); trace(-9/2); trace(9%5); 运行结果为()
A.
14 5 -5 10 -4.5 4
B.
5 5 -5 10 -4.5 1
C.
5 5 -5 10 4.5 4
D.
5 5 -5 10 -4.5 4
【多选题】下列哪些氨基酸与茚三酮反应的颜色是生成黄色的物质
A.
甲硫氨酸
B.
缬氨酸
C.
脯氨酸
D.
羟脯氨酸
【单选题】It is natural for a foreigner to speak the language with a trace of an accent.
A.
with a clue of
B.
with a sign of
C.
in a trace of
D.
with a trace of
【简答题】组成蛋白质的20种氨基酸中,除()外,其余19种氨基酸都有旋光性。含S有氨基酸有()和()。大多数氨基酸与茚三酮反应产生蓝紫色产物,唯有()产生黄色产物。
【简答题】氨基酸的性质由其()决定。其共性有:()、()、()和()。所有氨基酸氨基和羧基以及()氨基酸的侧链可以参与特定的化学反应,其中与()的反应可用于Van Slyke定氮,()反应和与()反应可用来测定N-端氨基酸。蛋白质氨基酸中只有()与茚三酮反应产生黄色物质,其余生成()物质,利用此反应可对氨基酸进行定性或定量分析。
【单选题】一平面简谐波沿Ox轴正方向传播,已知振幅为1.0m,周期为2.0s,波长为2.0m。在t=0s时坐标原点处的质点位于平衡位置且沿Oy轴正方向运动。则该波的波动方程(或称波函数)为:
A.
B.
C.
D.
D
【简答题】组成蛋白质的20种氨基酸中,除 外,其余19种氨基酸都有旋光性。含S有氨基酸有 和 。 大多数氨基酸与茚三酮反应产生蓝紫色产物,唯有 产生黄色产物。
【判断题】旅游容量按照内容划分为旅游环境、社会、经济容量。( )
A.
正确
B.
错误
【简答题】如何启动SESSION 级别的TRACE
【判断题】与茚三酮反应生成黄色物质的氨基酸是His。
A.
正确
B.
错误
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