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I suspect not everyone who loves the country would be happy living the way we do. It takes a couple of special qualities. One is a tolerance for solitude. Because we are so busy and on such a tight budget, we don’t entertain much. During the growing season there is no time for socializing anyway. Jim and Emily are involved in school activities, but they too spend most of their time at home.The other requirement is energy — a lot of it. The way to make self-sufficiency work on a small scale is to resist the temptation to buy a tractor and other expensive laborsaving devices.
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【单选题】There are two factors which determine an individual's intelligence. The first is the sort of brain he is born【C1】______. Human brains differ considerably,【C2】______being more capable than others.【C3】_...
A.
for
B.
by
C.
with
D.
in
【单选题】There are two factors which deter mine an individual's intelligence. The first is the sort of brain he is born【B1】. Human brains differ considerably,【B2】being more capable than others.【B3】no matter ho...
A.
for
B.
by
C.
with
D.
in
【单选题】听力原文：There are two factors which determine an individual's intelligence. The first is the sort of brain he is born with. Human brains differ considerably, me being more capable than others. But no mat...
A.
Children reared under average conditions possess average intelligence.
B.
Lack of opportunity prevents the growth of intelligence.
C.
An individual's intelligence is determined chiefly by his environment.
D.
Changes of environment produce changes in the brain structure.
【单选题】硝酸甘油舒张血管平滑肌的作用机制是
A.
对血管的直接舒张作用
B.
阻滞钙离子通道
C.
阻断α肾上腺素受体
D.
阻断β肾上腺素受体
E.
产生一氧化氮，使细胞内环磷酸鸟苷升高
【单选题】听力原文： There are two factors which determine an individual's intelligence. The first is the sort of brain he is born with. Human brains differ considerably, some being more capable than others. But no ...
A.
85.
B.
100.
C.
110.
D.
125.
【单选题】There are two factors which determine an individual's intelligence. The first is the sort of brain he is born【B1】. Human brains differ considerably,【B2】being more capable than others.【B3】no matter how...
A.
for
B.
by
C.
with
D.
in
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