完形填空(共20小题;每小题1.5分,满分30分) When I was a young girl, I spent a lot of time with my grandparents, who lived in a community especially for the elderly and near to So when I 39 a 100-dollar prize in the kindness competition for my community, I 40 thought of the elderly! I then 41 my local community centre and told them how I'd made a suggestion that if I had 100 dollars to 42 my community, I would use it for the elderly who were living 43 . I asked, "Could you do something a bit 44 so that they could all get something from this 45 ?”"Yes, of course, we could do a buffet (自助餐)and dance,”the centre manager told me. I thought this was a fantastic 46 and a very worthwhile use of the 47 .We bought food and beverages (饮料) enough to serve about 30 elderly residents. A poster was 48 to announce it and it was 49 for an afternoon. I went up to see how it was all 50 and it turned out to be a
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如果有两个有理数的和是正数,那么这两个数 [ ]
A.一定都是正数
B.一定都是负数
C.一个正数一个负数
D.至少有一个正数
雷诺现象的诊断依据错误的是()。
A.多发生于中青年女性
B.单侧发病,特别限于1~2指
C.发病后迅速发展成组织坏死、溃疡
D.动脉搏动减弱或消失
E.有发热、系统性症状、贫血、血沉增快和抗核抗体阳性等实验室检查异常
“春华秋实”的意思是:春天开花,秋天结果.但当摘除了花的哪个部分后,肯定不会结出果实( )
A.雄蕊
B.雌蕊
C.花粉
D.花瓣
酚妥拉明可用于治疗
A.支气管哮喘
B.青光眼
C.外周血管痉挛
D.心律失常
E.重症肌无力
辩证唯物主义与旧哲学的不同之外在于( )。
A.它是系统化、理论化的世界观
B.它对世界的看法既是唯物的,又是辩证的
C.它具有高度的革命性和严格的科学性
D.它是自然知识和社会知识的概括