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【单选题】
符合I度营养不良的诊断标准是A.
精神萎靡
B.
肌肉松弛
C.
身长低于正常
D.
腹部皮下脂肪0．4cm以下
E.
体重低于正常值1 5％一25％
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举一反三
【简答题】某生物有四对同源染色体,在减数分裂中能形成( )个二价体和( )条染色体。
【单选题】听力原文：M: Susan, could you do me a favor? W: What is it, John? You will ask for a leave from Professor Li's class again? M: No, no. This is easy compared to that. My cousin is coming on Thursday. She ha...
A.
He will meet her cousin sister at the station.
B.
He will ask for a leave from the class.
C.
He will have an interview.
D.
He will be on duty at the library.
【单选题】图甲表示某动物精原细胞中一对同源染色体,图乙表示该精原细胞形成的精细胞中的一条染色体,若只考虑图中字母所表示的基因,下列相关叙述中正确的是
A.
复制形成的两个A基因发生分离的时期为有丝分裂后期和减数第一次分裂后期
B.
图乙所示的精细胞形成的最可能原因是在减数分裂间期发生了基因突变
C.
与乙同时产生的另外三个精细胞的基因型最可能为AdE、aDe、aDe
D.
该精原细胞经减数分裂最可能产生了四种不同基因组成的精细胞
【简答题】A. Oh, yes. How do you do, Mr. Smith? My name is LiYing B. Excuse me C. you are the general manager D. Welcome to our company E. I’ll be glad to see you again. F. Here is my card. G. That’s all right ...
【单选题】安检法规的特点是专业性。安检法规属于( )性质 , 它就安检专业工作规定了工作范围、方针原则 , 处罚处置的管理措施等。
A.
国家法规
B.
安检工作规定
C.
行业法规
D.
业务工作规则
【简答题】work in pairs and role-play the dialogue below. A: Can you do me a favor? B: What can I do for you? A : I’m very busy recently and can’t finish my homework. There’s too much of it. B: What do you mean...
【简答题】A. Welcome to China, Mr. Smith. B.Are you here with your family? C.Let’s take a short rest in the waiting room. D.Are you Mr. Smith from America, please? E.I’m very glad to meet you. F. You looke a li...
【单选题】Student A: By the way, would you please do me a favor by passing the book over? Student B: ______, here you are.
A.
I think so.
B.
With pleasure.
C.
Please take it easy.
D.
Yes, but why?
E.
Sure you can.
F.
It's very kind of you!
G.
Never mind.
H.
Not too bad.
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