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解方程或比例 （1）94.6-15X=91.6 （2）4.8：3=X：18．
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【简答题】D Oncea group of 17-year-old schoolboys decided to break the world basketballmarathon record ( 马拉松记录 ). They wanted to play for ninety hours and add six hours to therecord. Each team had nine players,...
【单选题】生活在不同环境中的同卵双胞胎的智商测试分数很接近，这说明：
A.
后天环境对智商的影响较大
B.
遗传和后天环境对儿童的影响是平行的
C.
遗传对智商的影响较大
D.
遗传和后天环境对智商的影响相当
【多选题】生活在不同环境中的同卵双胞胎的智商测试分数很接近,下列观点不正确的有
A.
遗传和后天环境对儿童的影响是一样的
B.
后天环境对儿童的智商影响较大
C.
遗传对智商的影响较大
D.
同卵双胞胎几乎不受后天的影响
【单选题】Schoolboys_____always_____not______.
A.
are, told, smoke
B.
are, told, to smoke
C.
are, tell, smoke
D.
are, tell, to smoke
【单选题】The schoolboys and schoolgirls are walking along the street, _____a small redcap .
A.
each of them has
B.
they each have
C.
every wears
D.
each wearing
【单选题】English schoolboys often show the sense of sportsmanship to a______high degree in their relations with each other.
A.
precisely
B.
surprisingly
C.
clearly
D.
essentially
【单选题】The example of the English schoolboy was used to show that ______.
A.
English schoolboys respect teachers more than they respect their friends
B.
young people have different ways to ask time from the previous generations
C.
younger generations vary their speeches more than the previous generations
D.
even the same person will speak in different ways in different contexts
【简答题】The schoolboys were frozen into complete silence as they saw the ______ look on their 's face． 看到老师脸上露出可怕的表情，男生们立即静了下来。
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