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问题 填空题

观察下列各式：12+1=1 ×2，22+2=2 ×3，32+3=3×4，…，请你将猜测到的规律用含自然数n（n≥1 ）的等式表示出来为（    ）．

答案

n2+n=n（n+1）

听力题

根据短文内容和首字母提示，把所缺单词的正确形式完整地填写在短文下的横线上。

At school many things happen to us. We may feel excited when we succeed in a school play. We may feel sorry if we lose an important _76 g____. We want to keep the memory（记忆）in our lives. How to keep memories? Our teacher, Mr. Smith, has taught us how to _77 r___ things to make our own yearbook. A yearbook is a kind of book which is used to memory exciting moments. It’s usually made at the end of year. Last _78 D___, we began to make our yearbook. First we chose the persons that had done something special, then some students interviewed them, some _79 w____ down their stories, others took photos of them. Finally our teacher helped us to put the things _80 t____. Then we had our first yearbook.

小题1:__________ 小题2:__________ 小题3:__________ 小题4: ___________小题5:__________
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单项选择题

干燥综合征患者阳性率较高的抗体是

A．抗Sm抗体
B．抗U1RNP抗体
C．抗Scl-70抗体
D．抗SSA抗体
E．抗Jo-1抗体
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