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【简答题】
“We don’t believe it. 1 until now I haven’t 2  ( receive) even 3 smallest piece of paper reporting the real cause of 4 death,” said Mr Stone 5  ( excited) facing the thirty representatives 6 at least twenty countries that had been the biggest import countries of the British beef but now refused 7                ( have )it. When he saw no signs of anybody 8 (be) willing to speak out, Mr Stone got madder, adding, “You will have to eat beef every day, won’t you? In the past, to get our beef, you ordered 9 advance, as much as you could, saying in your thank-you letter, … without the British beef we can’t imagine 10   a colorless sight would be on our countrymen’s dinner tables. ”
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【简答题】在F2代中有多少比例的后代高度和原来两个亲本(AABBCC和aabbcc)相等。
【单选题】Here ___. [     ]
A.
comes the bus
B.
the bus comes
C.
come the bus
D.
the bus come
【单选题】基因型为aabbcc的桃子重120克,每产生一个显性等位基因就使桃子增重15克,故AABBCC桃子重210克。甲桃树自交,F 1 每桃重150克。乙桃树自交,F 1 每桃重120~180克。甲乙两树杂交,F 1 每桃重135~165克。甲、乙两桃树的基因型可能是 [     ]
A.
甲AAbbcc,乙aaBBCC
B.
甲AaBbcc,乙aabbCC
C.
甲aaBBcc,乙AaBbCC
D.
甲AAbbcc,乙aaBbCc
【单选题】基因型为AAbbCC与aaBBcc的小麦进行杂交,得到F 1 ,F 1 形成的配子种类数,F 1 自交后代F 2 的基因型种类数分别是 [     ]
A.
4和9
B.
4和27
C.
8和27
D.
32和81
【单选题】关于冬季调和汽油叙述正确的是?
A.
比夏季调和汽油更容易蒸发
B.
蒸发性更高
C.
在夏季使用,可能会造成汽车的驱动性能故障
D.
以上都对
【单选题】关于冬季调和汽油叙述正确的是?
A.
比夏季调和汽油更容易蒸发
B.
蒸发性更高
C.
在夏季使用,可能会造成汽车驱动性故障
D.
以上都对
【单选题】下列各基因型中,属于纯合体的是 [     ]
A.
AaBbCc
B.
aaBBCc
C.
aaBbcc
D.
AAbbcc
【单选题】关于冬季调和汽油叙述正确的是
A.
比夏季调和汽油更容易蒸发
B.
蒸发性更高
C.
在夏季使用,可能会造成汽车的驱动性能故障
D.
d. 以上都对
【简答题】Something must be wrong with the girl's She cant hear clearly A . nose B arms C. eyes D ears 2 . On Mother's Day, Cathy made a beautiful card as a___ for her mother. A. secret B. gift C. work D. task ...
【判断题】生长素能促进二年生长日植物开花,因为它能代替低温和长日照。
A.
正确
B.
错误
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