25. amazed me most was that the young boy who had lost both arms in an accident could handle a pen with his feet.
A.That B.It C.Which D.What
24.---How did you find the long talk given by the headmaster on Teachers’ Day?
--- . I’d rather he it short.
A.very well; made B.Boring; had made
C.Dull; made D.Exciting; had made
23.The man of shooting 6 school children was caught by Beijing police, XINHUA News Agency reported on Friday.
A.being suspected B.suspecting
C.suspected D.to be suspected
22.Before the Hope Project was carried out in this poor area, children here had no to education.
A.access B.approach C.attitude D.attraction
第一节:单项填空(共15小题,每小题1分,满分15分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡将该项涂黑。
21.What lessons China can draw from financial crisis in the United States has become
hot topic in Beijing.
A.the; a B.a; a C./; the D.the; /
3.合格奶粉每100g中含蛋白质约18g,蛋白质中氮元素的平均质量分数为16%,则每100g合格奶粉中氮元素的质量为 g;现测定某奶粉每100g中含有氮元素的质量为0.5g。则这种奶粉属于 (填“合格”或“不合格”)奶粉。
2.蛋氨酸中氮元素的质量分数为 。
蛋白质是机体生长及修补受损组织的主要原料,人体通过食物获得的蛋白质在胃肠中与水反应,生成氨基酸,蛋氨酸(化学式C5H11O2NS)就是其中的一种。请回答下列问题:
1.蛋氨酸中氮元素的质量比C:H:N:S:= 。
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