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问题 填空题

挂在弹簧测力计上的铁块重7.9N，当它全部浸没在水中时，弹簧测力计的示数是 6.9N，此时铁块所受的浮力为_____N，当铁块一半进入水中时，浮力是_____N．

答案

1.0；0.5

改错题

文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏词符号∧，并在此符号下面写出该加的词。

删除：把多余的词用斜线＼划掉。

修改：在错词下面划一横线，并在该词下面写出修改后的词。

注意：1、每处错误及其修改均仅限一词；

2、只允许修改10处，多者从第11处不计分。

In modern society, competition is everywhere. No wonder a English philosopher considers competition the source of a series of problem such as frustration and anxiety. Therefore, if we stress cooperation too much, there would be no progress. In my opinion, all are important and necessary.

Let's take the competition at school for example. Even a gifted student won't make a remarkable progress if he is in a class without competition. That's because competition, and rather, challenge is a driving force made him go forward. On the other hand, if we don't cooperate with each other, it's impossible for us learn from each other. And that's why most of the great discoveries or inventions in the modern world are the result of cooperation.

To conclude, those who laugh last are the people who can successful cope with the relationship between competition and cooperation.
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单项选择题 1.0

MCV↑、RDW↑，常见的疾病是（）

A.再生障碍性贫血

B.轻型地中海性贫血

C.缺铁性贫血

D.巨幼细胞性贫血

E.骨髓增生异常综合征
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