2．2009年甲型H1Nl流感病毒肆虐全球，目前我国的许多地方开始有计划的接种“甲流疫苗”，接种该疫苗后在体内可引起的免疫反应是w.w.^w.k.s.5*

　　 A．B细胞受刺激后增殖分化成能使靶细胞裂解的效应细胞

　　 B．T细胞受刺激后释放淋巴因子和形成相应的效应T细胞

　　 C．吞噬细胞受刺激后能特异性识别甲型H1N1流感病毒

　　 D．“甲流疫苗”与病毒结合使其失去侵染宿主细胞的能力　

1．下列与细胞有关的说法不正确的是

　　 A．细胞内的生物膜在结构上具有一定的连续性

　　 B．原核细胞基因的非编码区上有RNA聚合酶结合位点

　　 C．由于基因的选择性表达使体细胞不再具有全能性

　　　 D．细胞核是真核细胞生命活动的控制中心　

随着人们生活水平日益提高和手机收费不断降价，手机已经成为人们日常生活中的必需品，也开始大量涌入中学校园。由此引发一场观念碰撞：中学业生该不该带手机？请你围绕 “Is it necessary for a middle school student to carry a mobile phone?”这个问题，参考所给要点，写一篇英语短文。

要点：

1．带手机的好处；

2．带手机的不利因素；

3．我的观点是：

注意：

1．词数100~120，短文开头已给出(不计词数)

2．参考词汇：convenient 方便的　 the electric wave radiation电波辐射

2．只允许修改10处，多者(从第11处起)不计分。

It was a special day because I took the final P.E Test for Senior Three students.

The sun was shining bright and we reached the stadium by bus. Under the guidance of the teacher, we gather in groups at the entrance…Before the 1500-meter race, we had a five-minute warm-up, and I felt a little nervous because I was not doing well long-distance running. With the teacher’s order, we began to run as fast as we could. Towards the end , I was so tiring that my pace slowed down and several runner caught up with me. However, encouraged by my classmates, I was kept running with every effort. Finally I crossed the finishing line at 5’40’’. In my delight, this is the best result I had got in a 1500-meter race.

Today I was a success! Not only did I challenge the strength that a runner needed but also I learned that by trying my best would really make a difference.

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号(^)，并在其下面写上该加的词。

删除：把多余的词用斜线(/)划掉。

修改：在错的词下划一横线，并要该词的下面写上修改后的词。

注意：

1．每处错误及其修改均仅限一词；