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【单选题】
对多发性硬化检查提供重要依据的是A.
症状多样化、病程缓解与复发的特点
B.
脑脊液检查
C.
脑组织病理切片
D.
MRI
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举一反三
【单选题】Increasingly, over the past ten years, people especially young people have become aware of the need to change their eating habit, because much of the food they eat, particularly processed foods, is no...
A.
people' s growing interest in natural foods
B.
natural food and health diet
C.
the importance of fibre in foods
D.
harmful effects of sugar
【单选题】Biodiesel Yuthachai of Thailand has invented a home-grown alternative to expensive imported diesel, a biodiesel derived from vegetable oil. Biodiesel is winning political backing in Thailand because i...
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】17+8.9+4.83=5.17+4.83+8.9,是用了( )。 【 A、加法结合律 B、加法交换律和结合律 C、加法交换律】
A.
加法结合律
B.
加法交换律和结合律
C.
加法交换律
D.
乘法结合律
【简答题】估算． 4.83×0.52≈ 5.03×3.98≈ 4.01×8.9≈ 15.2÷2.9≈ 4.83÷0.21≈ 55.8÷3.9≈
【简答题】直接写出得数 5.17+1.96+4.83= 12.5×0.34×8= 5.01×101-5.01= ﹙ 7 12 - 1 3 ）× 2 7 = 5×（ 1 5 - 1 6 ）×6=
【简答题】3×0.59－2.5×4.9×4＋5.17×5.9．48.3×0.59-2.5×4.9×4+5.17×5.9．
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