问题
单项选择题
关于职业病特点错误的是（）
A.病因明确
B.存在剂量-反应关系
C.病因大多数可定量测定
D.病变程度均于有害因素作用强度有关
E.病变早期处理预后较好
答案
参考答案：D
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关于职业病特点错误的是（）
A.病因明确
B.存在剂量-反应关系
C.病因大多数可定量测定
D.病变程度均于有害因素作用强度有关
E.病变早期处理预后较好
参考答案：D
There was once a boy called Mario who loved to have loads of friends. He always 31 off how many friends he had at school. One day his grandfather said to him, “Mario, I 32 you a big bag of popcorn that you don’t have as many friends as you think. I’m sure many of them are nothing more than companions.” Mario 33 the bet without hesitation. However, he wasn’t sure how to test 34 his schoolmates were real friends or not, so he asked his grandfather. The old man answered, “Wait a minute.” Then the old man left, 35 soon as though carrying something in his hands, but Mario could see 36 there. “Take it. It’s a very special chair because it’s invisible (看不见). It’s rather 37 to sit on it, but if you take it to school and 38 to sit on it, you’ll activate (激活)its magic and you’ll be able to 39 who your real friends are. ” Mario, brave and determined, took the 40 and set off for school. At break time he asked everyone to form a(n) 41 , and he put himself in the middle, with his chair. Having difficulty seeing it, Mario tried to sit on it and 42 straight onto his backside. Everyone around him had a pretty good laugh. “Wait！Let me try again,” Mario said. But again, he missed the seat, 43 more surprised looks and a few catcalls (尖叫，喝倒彩). Mario didn’t 44 and kept trying to sit on the magic chair. But he kept falling onto the ground…until， 45 he tried again but didn’t fall. Looking around, Mario saw three of his best friends 46 him up. Meanwhile, many others he had 47 as friends had done nothing but make 48 of him. And there, the show 49 to an end. Mario understood that true friends were those who 50 for him, and not just the companions that happened to be passing by. And someone who took joy in his misfortunes (不幸) was even less of a friend.
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