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问题 单项选择题 A1/A2型题

常有明显夜间疼痛症状的良性骨肿瘤是（）

A.骨巨细胞瘤

B.骨软骨瘤

C.成骨细胞瘤

D.骨样骨瘤

E.软骨黏液纤维瘤

答案

参考答案：D

解析：骨样骨瘤的临床症状为病灶部位疼痛，夜间痛明显和服用水杨酸类药物可解除疼痛为本病特点。

改错题

文中共有10处错误，每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。

删除：把多余的词用斜钱（\）划掉。

修改：在错的词下划一横线，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处起）不计分。

Dear students,

In order to increase the students interest in learning English and improving their spoken English, the Students’ Union was going to hold an English speech contest in the evening of December 30. Which is going to be held in the school main hall and will begins at 7:30. But the best five students of this English contest will be given prizes. Everyone in the Grade Three is welcome to take part in it. Those who would like take part in this contest should go to the office of the Students’ Union and sign your names before December 15. Welcome to have the great fun!

the Students’ Union
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单项选择题

氕、氘、氚是（）的同位素。

A、氧

B、氢

C、氦

D、氖
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