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【单选题】
在书面语和口语中都是如此。This is ture in spoken language as well as in written language.
A.
ture
B.
spoken
C.
as well as
D.
written
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【单选题】er: d 5. Mike consumes two commodities, x and y , and his utility function is min{ x + 2 y , y + 2 x }. He chooses to buy 8 units of good x and 16 units of good y . The price of good y is $.50. What i...
A.
$32
B.
$40
C.
$24
D.
$16
【单选题】造成人类遗传病的原因有多种。在不考虑基因突变的情况下,下列说法正确的是
A.
21三体综合征一般是由于第21号染色体结构异常造成的
B.
猫叫综合征是第5号同源染色体中缺失1条造成的遗传病
C.
冠心病属于多基因遗传病,这类遗传病在群体中发病率较高
D.
若父母表现型均正常,生一个患红绿色盲男孩的概率为1/4
【单选题】Who invented Movable Type Printing?
A.
Zhang Hen
B.
Cai Lun
C.
Shen Kuo
D.
Bi Sheng
【单选题】Mike consumes two commodities, x and y; and his utility function is min{x +2y,y+2x}. He chooses to buy 8 units of good x and 16 units of good y. The price of good y is 0.50. What is his income?
A.
32
B.
40
C.
24
D.
16
【简答题】造成人类遗传病的原因有多种。在不考虑基因突变的情况下,回答下列问题:原发性高血压属于()基因遗传病,这类遗传病容易受环境因素影响,在人群中发病率较高。
【简答题】function y=two_min(x) if x<20 y=-exp(-(x/20).^2); else y=-exp(-1)+(x-20)*(x-22); end
【单选题】The young inventor wants to take out a ________ on his new type of printing machine.
A.
privilege
B.
precaution
C.
patent
D.
monopoly
【简答题】What are the advantages of movable type printing?
【简答题】invented the art of printing(movable type printing) in the Northern Song Dynasty.
【简答题】造成人类遗传病的原因有多种。在不考虑基因突变的情况下,回答下列问题:就血友病和镰刀型细胞贫血症来说,如果父母表现型均正常,则女儿有可能患(),不可能患()。这两种病的遗传方式都属于单基因()遗传
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